Used Mercedes S-Class 2014-2020 review

The MercedesS-Class is one of the best luxury cars around. It's supremely comfortable and great value used.

What's the used Mercedes-Benz S Class like?

When this iteration of the Mercedes S-Class launched in 2014, it probably stung those at Rolls-Royce and Bentley because some pundits declared this Mercedes to be the best luxury car in the world, and it did so at a fraction of the cost anything made by either British luxury car maker.

But, no matter how good value it was back then, you'd still have needed to be very affluent to buy a new one. Thankfully, with the onset of an all-new 2021-onwards Mercedes S-Class and the benefit of depreciation, you can buy a used example of this technological tour de force for the price of a factory-fresh small car.

Overview
The Mercedes S-Class is a top-tier luxury car renowned for its exceptional comfort and value as a used option. Since its launch in 2014, it has been praised for its advanced technology and performance, making it a compelling choice for those seeking luxury without the exorbitant price tag of competitors.

Pros

  • Exceptional comfort on long journeys
  • Advanced technology and features throughout
  • Impressive performance from all engine options

Cons

  • Diesel isn't as efficient as some rivals
  • Expensive to maintain with high servicing costs
  • Depreciation may limit resale value

Used cars available now

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Mercedes-Benz S Class 2.9 S350d AMG Line G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S Class

2.9 S350d AMG Line G-Tronic+ Euro 6 (s/s) 4dr

£37,777

Mercedes-Benz S Class 2.9 S350Ld AMG Line (Premium Plus, Executive) G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S Class

2.9 S350Ld AMG Line (Premium Plus, Executive) G-Tronic+ Euro 6 (s/s) 4dr

£44,995

Mercedes-Benz S CLASS 3.0 S580eL 22kWh AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S CLASS

3.0 S580eL 22kWh AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

£46,679

Mercedes-Benz S Class 3.0 S500Lh MHEV AMG Line (Premium Plus) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

Mercedes-Benz S Class

3.0 S500Lh MHEV AMG Line (Premium Plus) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

£46,995

Mercedes-Benz S-CLASS 2.9 S350d AMG Line G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S-CLASS

2.9 S350d AMG Line G-Tronic+ Euro 6 (s/s) 4dr

£47,989

Mercedes-Benz S Class 2.9 S350d AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S Class

2.9 S350d AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

£48,500

Mercedes-Benz S-CLASS 2.9 S350d AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S-CLASS

2.9 S350d AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

RRP £83,535

£48,950

Mercedes-Benz S CLASS 3.0 S500Lh MHEV AMG Line (Premium Plus, Executive) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

Mercedes-Benz S CLASS

3.0 S500Lh MHEV AMG Line (Premium Plus, Executive) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

£48,990

Mercedes-Benz S-CLASS 3.0 S500Lh MHEV AMG Line (Premium) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

Mercedes-Benz S-CLASS

3.0 S500Lh MHEV AMG Line (Premium) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

RRP £97,945

£49,249

Engines & Performance: The lone diesel is the 258bhp S350d, while the petrols range from the 455bhp 4.7-litre V8 in the S500 up to the 530bhp V12-engined S600. There’s also a petrol-electric hybrid known as the 302bhp S400h; a petrol plug-in hybrid called the S500e with 329bhp, as well as a diesel hybrid in the form of the 201bhp S300h.

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As part of its facelift in 2018, the S-Class received a set of new engines aimed to maximise efficiency. The 3.0-litre diesel straight six became available in two states of tune: the 286bhp S350d and the more powerful 335bhp S400d. The petrol range benefitted from mild hybrid technology on the 363bhp S450 and revised 451bhp S500 models, while the 482bhp S560e plug-in hybrid gained an electric-only driving range of roughly 30 miles between charges. AMG continued to fit a turbocharged 4.0-litre V8 in the 585bhp S63 and a turbocharged 6.0-litre V12 in the 621bhp S65.

On the road, the S-Class is, for a car of its size and weight, exceptional. Performance with any of the engines in situ is more than adequate. All S-Classes have a nine-speed automatic gearbox that works smoothly and quietly and shifts almost imperceptibly.

Ride & Handling: The S-Class has one of the most cosseting rides of any car in recent times, although not quite so isolating you from imperfections at town speeds as the latest Audi A8. It handles well, too, utilising all the technology it carries to corner with verve, especially so for a luxury limousine.

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The steering is precise and you'll find plenty of grip, but where the S-Class shines brightest is in terms of refinement since few other cars can waft like it, making it sublime on the motorway.

Interior & Practicality: Inside, the S-Class is awash with all the kit you could want, never mind need, and provides a great driving position with good visibility. All the major and minor controls are logically placed, work with a well-damped action and have a high-quality feel that few rivals can match. All models get a crisp 12.3in infotainment display that’s intuitive to operate, via touch or a rotary controller.

There’s plenty of space up front and masses in the back, too, especially with the long-wheelbase chassis, which is standard on all variants bar the S350d.

And there’s a large boot that's more than adequate for a week’s worth of holiday luggage, although the S500e and S560e plug-in hybrids have smaller boots (395 litres and 410 litres) because their batteries required take up some space.

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Trims & Equipment: Trim levels tend to be assigned to whichever engine you choose, but some give you the option of AMG or AMG Line trim. Both are more than well-equipped, as you might imagine, with AMG Line giving you keyless start and entry, cruise control, 19in alloy wheels, front and rear parking sensors, a rear-view camera, metallic paint, adaptive LED headlights, heated, electrically adjustable leather front seats with lumbar adjustment and a memory function, the Command Online infotainment system with two 12.3in screens, sat-nav, and even Apple CarPlay, Android Auto and a wireless smartphone charger are available in post facelifted examples from 2018 onwards.

Interested in buying a used Mercedes S-Class? Visit our Used Cars For Sale pages to find lots of cars listed at great prices.

Ownership cost

Used Mercedes-Benz S-Class 2014-2020 rear cornering

What used Mercedes-Benz S Class will I get for my budget?

For a car that came in at a small fortune new, you might be surprised to learn that you can pick up an early 2014 example for as little as £15,000. It will probably be an ex-chauffeur car with a galactic mileage on it, though, so we'd suggest that you spend closer to £20,000 for something with a below-average to average mileage for the year and a full service history.

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For a 2018 model, prices near £30,000 and often exceed that, with 2020 models pushing £40,000 – that's the last of this breed, although there are a few that strayed into 2021.

If you fancy one of the V8s, have upwards of £24,000 – that'll be the S500. The plug-in hybrids will set you back a few grand more.

Check the value of a used S-Class with What Car? Valuations

Find used Mercedes cars for sale

Our recommendations

Used Mercedes-Benz S-Class 14-21 side

Which used Mercedes-Benz S Class should I buy?

Engine: Choose the S350d and you’ll be getting one of the sweetest and quietest diesel engines around. You really would be hard pushed to tell that there was a diesel engine beneath its bonnet.

Specification: We’d seek out the AMG Line trim, because this keeps costs down (in relative terms) and gives you all the goodies a car like the S-Class deserves and expects. We’d also look for the long-wheelbase version.

Our favourite Mercedes S-Class: S350d L AMG Line

Alternatives

Used Mercedes-Benz S-Class 2014-2020 rear cornering

What alternatives should I consider to a used Mercedes-Benz S Class?

The latest (post-2017) Audi A8 is even quieter than the S-Class and rides just as well, which is really saying something. Previous A8s were pretty good, too, although there was a slight gruffness to their diesel engines and their ride left a little to be desired. They make a fine used buy, though, with good-value models widely available.

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The latest BMW 7 Series is a technical tour de force, with almost as much luxury and safety kit as the S-Class. Used examples now make for secure buys, and the driving, interior and standard kit all match the expectations of buyers in this market. Earlier generations aren’t quite as impressive, but find one that's reasonably priced and you’ll still enjoy luxury motoring on a budget.

For all the latest reviews, advice and new car deals, sign up to the What Car? Newsletter here

Interested in buying a used Mercedes S-Class? Visit our Used Cars For Sale pages to find lots of cars listed at great prices.

How reliable is the mercedes-benz S-Class ?

mercedes-benz S-Class

Used cars available now

In partnership with
AutoTrader logo
Mercedes-Benz S Class 2.9 S350d AMG Line G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S Class

2.9 S350d AMG Line G-Tronic+ Euro 6 (s/s) 4dr

£37,777

Mercedes-Benz S Class 2.9 S350Ld AMG Line (Premium Plus, Executive) G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S Class

2.9 S350Ld AMG Line (Premium Plus, Executive) G-Tronic+ Euro 6 (s/s) 4dr

£44,995

Mercedes-Benz S CLASS 3.0 S580eL 22kWh AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S CLASS

3.0 S580eL 22kWh AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

£46,679

Mercedes-Benz S Class 3.0 S500Lh MHEV AMG Line (Premium Plus) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

Mercedes-Benz S Class

3.0 S500Lh MHEV AMG Line (Premium Plus) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

£46,995

Mercedes-Benz S-CLASS 2.9 S350d AMG Line G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S-CLASS

2.9 S350d AMG Line G-Tronic+ Euro 6 (s/s) 4dr

£47,989

Mercedes-Benz S Class 2.9 S350d AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S Class

2.9 S350d AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

£48,500

Mercedes-Benz S-CLASS 2.9 S350d AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

Mercedes-Benz S-CLASS

2.9 S350d AMG Line (Premium) G-Tronic+ Euro 6 (s/s) 4dr

RRP £83,535

£48,950

Mercedes-Benz S CLASS 3.0 S500Lh MHEV AMG Line (Premium Plus, Executive) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

Mercedes-Benz S CLASS

3.0 S500Lh MHEV AMG Line (Premium Plus, Executive) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

£48,990

Mercedes-Benz S-CLASS 3.0 S500Lh MHEV AMG Line (Premium) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

Mercedes-Benz S-CLASS

3.0 S500Lh MHEV AMG Line (Premium) G-Tronic+ 4MATIC Euro 6 (s/s) 4dr

RRP £97,945

£49,249

About the writer

Mark Pearson

Name: Mark Pearson

Title: Used cars editor

Follow Mark Pearson on

Mark Pearson has been a motoring journalist for more than 15 years and is currently the used cars editor for What Car?.

Mark spent his formative years at the BBC, where, at various times, he scheduled, broadcast and archived television and radio programmes and researched, wrote and produced promotional material.

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