MG S9 review

The MG S9 is a seven-seater plug-in hybrid (PHEV) family SUV that's affordable and well-equipped

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RRP £34,210

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MG S9 review

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MG S9 third row seats

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MG S9 rear cornering

MG S9 interior

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MG S9 front cornering

MG S9 driving side

MG S9 driving rear left

MG S9 static side tailgate open

MG S9 static rear tailgate open

MG S9 wheel detail

MG S9 trim detail

MG S9 front seats

MG S9 rear seats

MG S9 third row seats

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MG S9

Expected annual mileage 5000 Term months 48 Deposit months 12 Monthly payment £334.03 Initial payment £4,008.36

Step-by-step

Leasing works a bit like a long-term rental. You drive it, but you don’t own it.

What you get

When you lease with Autotrader you get all of this:

Excess mileage charges and return conditions apply. Subject to availability and credit status. 18+ T&Cs apply.

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£4,253 total upfront (£4,008 initial rental plus £245 processing fee) | 5000 miles | 48 months

Power

295 bhp

0-62 mph

9.6 s

Efficiency

353.1 mpg

Figures for 1.5T 24.7kWh Premium Auto Euro 6 (s/s) 5dr

Big car

Family SUV

Plug-in hybrid

Jump to:

Introduction

Performance & drive

Interior

Passenger & boot space

Buying & owning

Dan Jones

Lawrence Cheung

Dan Jones & Lawrence Cheung

Updated: 31 July 2026

How we test cars

Two years ago, MG’s range was only six cars strong but, since then, it has doubled. Despite that rapid growth, it’s still finding ways to cover almost every niche and the MG S9 is the brand’s debut into the seven-seat class. Has it been ambitious?

Well, first things first: the S9 is positively massive. In fact, at almost five metres long, it’s actually longer than the Hyundai Santa Fe and with a height over 1.7m, it’s almost as tall. That bodes well when it comes to interior practicality.

New car deals

Best price from £31,860

A circular icon with a £ sign at the centre.

What is What Car? best price?

The What Car? best price shows you the cheapest way to buy your new car, whether it's by choosing an in-stock car through our partner Autotrader or placing a factory order.

Available now from: £31,860

RRP from: £34,210

Available now

From £31,860

Leasing deals

From £334

About our price indicator

What Car? indicative Personal lease example (subject to status)

MG S9

Expected annual mileage 5000 Term months 48 Deposit months 12 Monthly payment £334.03 Initial payment £4,008.36

Step-by-step

Leasing works a bit like a long-term rental. You drive it, but you don’t own it.

What you get

When you lease with Autotrader you get all of this:

Excess mileage charges and return conditions apply. Subject to availability and credit status. 18+ T&Cs apply.

In partnership with

AutoTrader logo

£4,253 total upfront (£4,008 initial rental plus £245 processing fee) | 5000 miles | 48 months

The S9 isn’t just a seven-seater, though, it’s also a plug-in hybrid (PHEV) that uses the same engine and battery combination as the MG HS PHEV – a car we’ve named Plug-in Hybrid of the Year two years in a row at our What Car? Car of the Year Awards.

But does the S9 have what it takes to come out on top against value-led rivals including both the Chery Tiggo 8 and Chery Tiggo 9, the Mitsubishi Outlander, or more premium rivals including the Santa Fe, Kia Sorento and Peugeot 5008?

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Verdict

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With its hugely attractive list price undercutting most rivals, we can see why the MG S9 will grab your attention. Thankfully, that’s not the only reason to consider one, because it offers more space for seven adults than similarly priced rivals and includes some handy features that make it easier to live with as well. Factor in a smart interior that’s generously equipped with a long electric-only range and the MG S9 PHEV should be a versatile fit for many families. Sure, there are rivals that are better to drive, while some are even more capacious, but since they cost so much more to buy in the first place, you’d have to make a very considered decision to look past the S9’s incredibly good value for money.

What's new?

Best buy

1.5T 24.7kWh Premium SUV 5dr Petrol Plug-in Hybrid Auto Euro 6 (s/s) (299 ps) review

1.5T 24.7kWh Premium SUV 5dr Petrol Plug-in Hybrid Auto Euro 6 (s/s) (299 ps) review

RRP £37,995

Pros

Cons

What's new?

Best buy

1.5T 24.7kWh Premium SUV 5dr Petrol Plug-in Hybrid Auto Euro 6 (s/s) (299 ps) review

1.5T 24.7kWh Premium SUV 5dr Petrol Plug-in Hybrid Auto Euro 6 (s/s) (299 ps) review

RRP £37,995

Trims available


Comfort

This is the entry-level trim for the MG S9. It’s well equipped with 20in alloy wheels, three-zone climate control, heated front seats, ambient lighting, an electric sunroof, satellite navigation and a powered tailgate.

Premium

This is the best-equipped version of the S9, with leather upholstery, ventilated and massaging front seats and a 12-speaker Bose sound system.

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Available now

Leasing deals

Performance & drive

What it's like to drive, and how quiet it is

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MG S9 rear cornering

Strengths

Weaknesses

How fast is it and which engine is best?

Choosing which MG S9 to go for is easy because there’s only one engine on offer. It’s actually the same 295bhp 1.5-litre turbocharged petrol engine and hybrid setup that you’ll find in the MG HS PHEV, delivering all its power to the front wheels.

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Of course, the S9 is quite a bit larger and heavier than the HS PHEV, so it isn’t quite as fast; we managed a 0-60mph sprint time of 8.5sec. That’s slower than the Chery Tiggo 9 (taking 5.6sec) and the Mitsubishi Outlander (7.2sec) we tested on the same day; both of which also come with four-wheel drive.

True, the S9 isn’t as eager to leap off the line as those two rivals, but it’s still responsive enough on the move and has enough mid-range shove to keep up with traffic at high speeds. Helpfully, the battery always keeps a small amount of charge in reserve, rather than running out entirely, giving you an extra and instant boost whenever you pull away.


Is it agile and is the ride comfortable?

The S9’s ride is generally comfortable most of the time, even if it isn’t as polished as what you get in more expensive rivals in the class. While the suspension is supple enough to do a good job of soaking up potholes, regardless of speed, it can get caught out over sudden divots and ridges, amplifying them enough to jostle occupants around in their seat. 

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That said, this is something that also affects the Tiggo 9 and Outlander, and the S9’s ride is a bit more settled than those two rivals. Luckily, the S9 isn’t so soft that it wobbles around over undulating roads but, again, firmer rivals including the Peugeot 5008 are more composed as you drive along country roads.

As you might expect in a massive seven-seater like the S9, handling isn’t a strong point. It feels decidedly heavy as you hustle along a winding road and there’s a fair amount of body lean through faster corners. The Outlander feels noticeably smaller, thanks to a higher sense of grip and tidier body control.

With a light and vague setup tuned to be effortless during low speed manoeuvres, the steering doesn’t give you much in the way of confidence at higher speeds, either. Ultimately, that makes it hard to judge what the front wheels are up to and you’ll be driving more casually as a result. You can switch the steering into a heavier Sport mode, but it adds so much artificial weight that you don’t actually get any extra feedback.

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Is it quiet and how easy is it to drive smoothly?

There’s a bit of suspension noise and tyre thump when the S9 tackles potholes and sharp ridges, but wind and road noise are well contained at motorway speeds, being slightly more hushed than the Tiggo 9 and Outlander.

Being a plug-in hybrid, you can drive the S9 with the petrol engine off in relative silence. Even when it fires up, engine noise is well muted but there is the occasional vibration felt through the seat.

The brake pedal response could also be better because it doesn’t give you much feedback as you press it; initially feeling light and vague before the brakes actually bite part-way down. That’s especially true at higher speeds, where it can be hard to judge just how hard you need to press the pedal to slow down sufficiently.

To help, you get three different modes of regenerative braking – low, medium and high – but the braking effect isn’t always consistent, sometimes letting the car coast and other times braking strongly.

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What’s the range and efficiency like and how quickly can it charge?

Like the HS, the S9 gets a 23.2kWh (usable) battery but the car’s extra weight means it has a shorter official electric range of 62 miles. That’s still impressive, though, traveling farther on a fully charged battery than the Hyundai Santa Fe (33 miles) and Mitsubishi Outlander (53 miles), if not quite as far as the Chery Tiggo 9 (91 miles).

The S9 doesn’t support DC fast-charging, so you’re limited to a maximum charging rate of 7kW from a wall charger and a 0-100% charge time of around four hours. That shouldn’t put you off – charging at home is far cheaper and makes the most sense financially. 

“While the S9 can only charge at 7kW, that’s perfect for charging at home overnight because it’s pretty much the duration of most cheap overnight tariffs.” - Dan Jones, Senior Reviewer

Tips & Advice

How to test drive a car

There’s no substitute for a test drive in a new car. Take it on a variety of roads and surfaces to ensure it measures up.

Interior

The interior layout, fit and finish

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MG S9 interior

Strengths

Weaknesses

What does the interior look like and is it well made?

So far, we’ve only sat in the top-spec Premium version of the MG S9, but it’s pretty impressive given the price. Going for that trim allows you to have a brighter beige leather upholstery option with wood-like trim finishers at no extra cost. 

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This gives the S9 a smart, classy look with a dash of colour over the standard black and silver colour scheme. It doesn’t take long to notice that the wood trim isn’t real wood, but the mixture of soft plastics and padded leather-like materials on the dash, doors and centre console give it a more upmarket feel than the Mitsubishi Outlander. 

Overall build quality is good. Indeed, everything feels screwed together well and all the physical buttons have a satisfying click to them. It’s fair to say that more expensive premium rivals, including the Hyundai Santa Fe and Kia Sorento, are even more impressive inside; however, given the S9’s price tag, it’s still an impressive effort.


Is the driving position comfortable and is it easy to see out?

You sit high up in the S9, and the driver’s seat lines you up perfectly with the steering wheel and pedals. Better still, every S9 comes with electrically-adjustable front seats, making it easy to find your perfect driving position – you’ll have to go for top-spec Premium trim if you want adjustable lumbar support, though.

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There’s plenty of height and reach adjustment for the steering wheel, but a potential downside is that the top section of the rim can block out the upper section of the digital driver’s display if you set it quite low.

Forward visibility is great, with the S9 giving you a good view out over the bonnet and an unrestricted view at junctions, courtesy of slim front windscreen pillars. The view over your shoulder is very good too, thanks to massive side windows – even by the third row of seats.

Due to the size of the S9, you might think that parking would be a daunting task. Thankfully, that isn’t the case, because every version comes with front and rear parking sensors as standard and a 360-degree parking camera that feeds a hi-res image onto the centre infotainment screen.


Are the dashboard and infotainment system easy to use?

No matter which trim level you go for, you get a pair of 12.3in screens, consisting of the touchscreen infotainment system and digital driver’s display. The latter uses the same layout as other MGs but isn’t particularly customisable, so you can’t really pick and choose what combination of information you’d like it to show, or show alternative layouts, such as a full screen map for the sat-nav. Mind you, most of the S9’s closest rivals can’t, either.

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Compared with the systems in its rivals, the S9’s infotainment software isn’t particularly impressive. Sure, the graphics look good but the screen becomes washed out on sunny days, even in the light mode, making it hard to read.

The large shortcut tiles on the home screen are easy to aim for, while a column of shortcut icons down the right hand side make it easy to hop between functions. However, the system is a bit slow to boot up, and it’s occasionally slow to respond to prods. The menus are a bit more logical than the Chery Tiggo 9’s but they could still be more intuitive. You can, at least, bypass the system with Android Auto and Apple CarPlay smartphone mirroring, though.

It’s great that you get some physical shortcut buttons below the infotainment touchscreen, making it easy to return to the homescreen, access the climate control menu and adjust fan speed. Unlike some MGs, you also don’t need to return to the homescreen before you can use the climate control shortcut, which is a vast improvement.

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Less impressive are the central ‘smart’ vents that sit above the physical controls. These are similar to what you’ll find in a Tesla Model Y and can only be adjusted by delving into the touchscreen and moving sliders around. As you can imagine, having to delve into a sub-menu to do that each time is far more distracting as you drive along than physically adjusting traditional air vents.

Opt for top-level Premium and you get a 12-speaker Bose sound system, which is clear and immersive.

“I was very impressed by the perceived quality of the S9 Premium’s interior, especially given the price.” - Dan Jones, Senior Reviewer

Tips & Advice

Which smartphone integration should I have?

Apple CarPlay and Android Auto are fantastic – and free – technologies. Here we show you the benefits, drawbacks and best apps

Passenger & boot space

How it copes with people and clutter

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MG S9 boot

Strengths

Weaknesses

How much space does it have for people?

The MG S9 is a very big car, so it probably won’t surprise you that there’s loads of space inside. Indeed, even if you’re six-feet tall and broad, you won’t struggle for head, leg or shoulder room when sitting in the front.

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Front storage won’t be an issue in the S9, either. The door bins are well-sized and there’s a large cubby beneath the central armrest, a pair of cupholders with a sliding cover, two spots for storing your phone (which includes a wireless charging pad if you go for Premium trim) and a large cubby below the centre console.

In the second row, even those over six feet tall will have lots of head room, despite the standard-fit panoramic roof. Even when you slide the bench all the way forward, there’s a good level of leg room, with more space on offer than in the Chery Tiggo 9 and Mitsubishi Outlander. Slide it all the way back and you’d have to be especially tall to struggle for leg or knee room. What’s more, there’s lots of foot space underneath the front seats.

The S9’s width means that three adults will have enough shoulder room to sit side-by-side across the second row. There’s a completely flat floor, so the middle seat passenger will have lots of foot space, but the middle seat is slightly raised, so six-footers will find their hair brushing against the rooflining.

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While some seven-seaters make entering the third row a bit of a pain, all you need to do in the S9 is press one button and the driver side rear seat will fold and slide forward in one motion. Once you’ve climbed in, you’ll find that there’s enough head room for even a six-footer to get comfortable.

Leg room in the third row isn’t quite as generous for taller adults but a six footer will have enough knee room to be comfortable for short journeys. If you need more leg room you can, of course, slide the second row bench forward, but it’s less of a necessity than it is in the Tiggo 9, Outlander and the Peugeot 5008. The Hyundai Santa Fe offers even more third row space, but it is significantly pricier to buy.

Unfortunately, you don’t get Isofix points in the S9’s third row – in fact, you only get them on the outer second row seats. That’s a match for the Chery Tiggo 8, Tiggo 9 and Outlander, but the 5008 also gets one on the front passenger seat. The Kia Sorento and Santa Fe fare better, by also having them in the third row.

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How much room does it have for luggage?

In five-seat mode with the second-row bench slid all the way back, the S9 has a 1026 litre boot. That’s massive, but MG measures its boot space from floor to ceiling rather than to the parcel shelf, like most manufacturers.

For a better comparison, the S9’s low parcel shelf meant that it managed to take nine carry-on sized suitcases, which is one more than the Tiggo 9, but one less than the Outlander and the Sorento. You can, of course, slide the second row forwards, to squeeze more in.

When you need even more space, the S9 has a 60/40 split-folding second row backrest. That’s a match for the Tiggo 9 and Santa Fe but not as versatile as the Outlander or 5008; the second row seats in those cars fold in a 40/20/40 split. This allows you to feed items through the middle without sacrificing any of the outer second row seats.

With the third row seats in place, you still have a decent amount of boot space, and we managed to fit four suitcases in. Regardless of which configuration you have the S9 in, the lack of a boot lip makes it easy to load items in and you get a bit of space underneath the boot floor large enough for the charging cable.

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“It’s slightly annoying that there isn’t anywhere to stow away the boot’s tonneau cover when the third row seats are in use, but then neither is there in the Tiggo 9 or Outlander” - Dan Jones, Senior Reviewer

Tips & Advice

Need ultimate practicality?

We’ve run the rule over the most spacious models on sale to deliver the definitive rundown of the cars with the biggest boots

Will the car fit your needs?

As part of the test drive, fill the car with regularly-carried luggage, and make sure the family can get comfy before you buy

Buying & owning

Everyday costs, plus how reliable and safe it is

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MG S9 badge detail

Strengths

Weaknesses

How much does it cost and what equipment do you get?

As a cash purchase, the MG S9 looks like great value for money, costing a bit more than the Chery Tiggo 8 but lots less than the Chery Tiggo 9, Hyundai Santa Fe, Kia Sorento, Mitsubishi Outlander and Peugeot 5008. Despite the attractive list price, there are cash discounts to be had so it’s well worth haggling with the dealer to save even further.

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PCP finance rates are also highly attractive, with lower monthly costs than the Tiggo 9 and the Outlander. Meanwhile, it’s worth noting the S9’s sub-£40k list price means it doesn’t command the luxury car tax, meaning it's cheaper on VED tax per year than most of its rivals.

Ways to buy

Cash from £31,860 Own the car outright. No monthly payments.

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Thanks to its long electric-only range, the S9 sits in a lower benefit-in-kind (BIK) tax bracket than its petrol and regular hybrid rivals, making it a good choice for company car drivers that want a seven-seater. That said, the Tiggo 9’s costs slightly less per month on salary sacrifice due to its even longer electric range.

MG has kept things simple by only offering the S9 in either Comfort or Premium trim. Even the entry-level version is well-equipped, getting 20in alloy wheels, heated front seats, a power tailgate, vehicle-to-load technology and all of the bits that we’ve already mentioned.

Upgrading to Premium, meanwhile, adds a few more niceties including ventilated front seats with massage function, an auto-dimming rear-view mirror, front fog lights and the interior upgrades.

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Is it reliable, and how long is the warranty?

While the S9 is too new to have featured in the 2025 What Car? Reliability Survey, MG as a brand didn’t perform well, claiming the bottom spot out of the 30 included manufacturers.

Should anything go wrong, at least the S9 comes with a seven-year/80,000-mile standard warranty. That’s pretty generous when compared with Peugeot’s three-year offering and longer than Hyundai’s five-year warranty, although the latter offers unlimited mileage.

Kia’s standard warranty also has a duration of seven-years but it offers a slightly longer mileage limit of 100,000 miles.


How safe is it, and is it easy to steal?

When the safety experts at Euro NCAP tested the S9 they gave it the full five star rating. That’s one more star than the Peugeot 5008 managed in the same year. That said, while it provided strong protection for children in the middle row seats, it could have provided stronger protection for the driver in a frontal impact..

It also helps that every S9 comes with lots of standard safety equipment, including automatic emergency braking (AEB), lane-keeping assistance, lane departure warning, rear-cross traffic alert and blindspot monitoring.

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“Considering even the top-spec Premium trim cost less than most entry-level rivals, I find the amount of kit that you get with the S9 really impressive. I can see why MG reckons that’ll be the best selling version.” - Dan Jones, Senior Reviewer


Buy it if...

- You want a seven-seater that’s great value for money

- You’re after lots of interior space

- You want a seven-seater PHEV with a long electric range

Don't buy if...

- You want a proven reliability record

- You want the most comfortable ride

- You need more than two Isofix points


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Reduce your car finance bills

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What is hire purchase?

Hire purchase allows you to make monthly payments to buy your next car – although these will be higher than with a PCP

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Low monthly payments are key to the appeal of Personal Contract Purchase (PCP) agreements. But are there downsides?

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Peugeot 5008 front right driving

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If you're interested in finding a MG MGS9, or any of the other family suv cars mentioned here, head over to our Cars available now pages to find new cars listed for sale at great prices.

MG MGS9 specifications

Best buy

1.5T 24.7kWh Premium SUV 5dr Petrol Plug-in Hybrid Auto Euro 6 (s/s) (299 ps) review

1.5T 24.7kWh Premium SUV 5dr Petrol Plug-in Hybrid Auto Euro 6 (s/s) (299 ps) review

RRP £37,995

RRP price range

£34,210 - £37,995

MPG range across all versions

353.1

Available fuel types (which is best for you? )

Petrol Plug-in Hybrid

Available colours

Number of engines (see all)

1

Number of trims (see all)

2

Warranty

7 years / 80,000 miles

Company car tax at 20% (min/max)

£681 - £757

Company car tax at 40% (min/max)

£1,362 - £1,513

FAQs

What is the range of the MG S9 PHEV?

Officially the S9 can travel up to 62 miles on electricity alone, which is farther than most of its rivals.

How much does the S9 PHEV cost?

As a cash purchase, the entry-level S9 will cost you a little more than the Chery Tiggo 8 but less than many seven-seat SUVs, including the Hyundai Santa Fe, Kia Sorento and Peugeot 5008.

How fast does the S9 PHEV charge?

The S9 doesn’t support DC fast charging, so it has a maximum charging rate of 7kW. Even so, it should charge from 0-100% in around 4 hours.

Does the MG S9 PHEV have seven seats?

Yes, no matter which version of the S9 PHEV you go for, you get seven seats and a decent amount of third row space. It’s worth noting that you don’t get third row isofix points, though.

New car deals

Best price from £31,860

A circular icon with a £ sign at the centre.

What is What Car? best price?

The What Car? best price shows you the cheapest way to buy your new car, whether it's by choosing an in-stock car through our partner Autotrader or placing a factory order.

Available now from: £31,860

RRP from: £34,210

Available now

From £31,860

Leasing deals

From £334

About our price indicator

What Car? indicative Personal lease example (subject to status)

MG S9

Expected annual mileage 5000 Term months 48 Deposit months 12 Monthly payment £334.03 Initial payment £4,008.36

Step-by-step

Leasing works a bit like a long-term rental. You drive it, but you don’t own it.

What you get

When you lease with Autotrader you get all of this:

Excess mileage charges and return conditions apply. Subject to availability and credit status. 18+ T&Cs apply.

In partnership with

AutoTrader logo

£4,253 total upfront (£4,008 initial rental plus £245 processing fee) | 5000 miles | 48 months

MG MGS9s available to buy

In partnership with

AutoTrader logo

MG MGS9 1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

MG MGS9

1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

£31,795

MG MGS9 1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

MG MGS9

1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

RRP £34,210

£31,860

MG MGS9 1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

MG MGS9

1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

RRP £34,210

£33,400

MG MGS9 1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

MG MGS9

1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

RRP £34,210

£33,510

MG MGS9 1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

MG MGS9

1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

RRP £34,210

£33,960

MG MGS9 1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

MG MGS9

1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

£34,210

MG MGS9 1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

MG MGS9

1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

£34,210

MG MGS9 1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

MG MGS9

1.5T 24.7kWh Comfort Auto Euro 6 (s/s) 5dr

£34,210

MG MGS9 1.5T 24.7kWh Premium Auto Euro 6 (s/s) 5dr

MG MGS9

1.5T 24.7kWh Premium Auto Euro 6 (s/s) 5dr

£34,995

See all available cars

About the writer

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Name: Dan Jones

Title: Senior Reviewer

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Dan joined What Car? in 2021 and is now the road test team's Senior Reviewer. In that role, he produces new car reviews for Whatcar.com and What Car? magazine, alongside occasional contributions for Autocar and Move Electric.

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Name: Lawrence Cheung

Title: New cars editor

Follow Lawrence Cheung on

Lawrence Cheung has worked at What Car? as New Cars Editor since 2021. He oversees the first drives section of the site and magazine, commissioning and writing about the latest cars to hit the market. He also contributes to sister magazine Autocar.

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