Used Audi A4 vs BMW 3 Series vs Mercedes C-Class vs Citroen DS5

Buying a used Audi A4, BMW 3 Series or Mercedes C-Class might seem obvious if you want an executive car. But is the Citroën DS5 a worthy left-field alternative?...

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What Car? team
24 Dec 2017 08:00 | Last updated: 14 Jun 2018 00:03

The Contenders

Audi A4 2.0 TDIe 163 SE

List price when new £25,202

Price today £11,000

Available from 2008-2015

A classy interior and smart looks have made the Audi A4 one of the most desirable executive cars


BMW 3 Series 320d Efficient Dynamics

List price when new £28,080

Price today £10,500

Available from 2012-present

Our Executive Car of the Year in 2012, the BMW 3 Series blends an involving drive with sleek design


Citroën DS5 2.0 HDI 160 DStyle

List price when new £25,900

Price today £8,500

Available from 2012-2015

Citroën’s flagship is the alternative choice – and its flamboyant styling makes the other three cars here look drab


Mercedes-Benz C-Class C 220 CDI BlueEfficiency SE

List price when new £28,270

Price today £10,000

Available from 2007-2014

Classy and well-built, the C-Class offers traditional Mercedes values in a surprisingly affordable package

Price today is based on a 2012 model with average mileage and full service history, correct at time of writing


Want a used executive car, but don’t want to plump for one of the usual suspects? In that case, you’ll probably find the Citroën DS5 pretty tempting.

Whether it’s in terms of its French nationality, its badge, its radical ‘monobox’ styling or its unusual choice of interior finishes, the DS5 breaks the mould, providing a left-field alternative to the German rivals that have traditionally dominated this sector. And with used Citroëns traditionally offering great value, it could well have price on its side too.

But that might not be enough for it to beat the established competition. The BMW 3 Series, for example, is one of the most crushingly competent used executive cars in the UK, and with plenty of ex-company and ex-fleet cars kicking around, it’s one of the most widely available too.

Used Audi A4 vs BMW 3 Series vs Mercedes C-Class vs Citroen DS5

Then there’s the Audi A4, also a fleet favourite, also ubiquitous and renowned for its classy, relaxing interior and efficient engine range. And if that wasn’t enough, the DS5 also has to contend with the Mercedes-Benz C-Class, a car with arguably the best badge appeal in a class laden with the stuff.

So is there any way the French fancy can break the German stranglehold on this class? And if it can’t, which of its rivals should have you parting with your hard-earned?


What are they like to drive?

This Efficient Dynamics version of the 3 Series has taller gearing and less power than a regular 320d. However, it develops the same 280lb ft of torque and pulls strongly from below 1500rpm, so there’s no need to constantly change down.

It’s also possible to leave the gearlever alone for long periods in the Audi A4 and Citroën DS5; they don’t have the torque of the 3 Series, but make up for this with shorter, less economy-focused gear ratios. In fact, there’s very little between the three cars when you look at their in-gear acceleration times.

Used Audi A4 vs BMW 3 Series vs Mercedes C-Class vs Citroen DS5

Only the C-Class has an advantage. Its engine produces a hefty 295lb ft of torque from just 1400rpm, so even when you’re stuck behind slow-moving traffic and faced with an incline, the C-Class will haul you up it without the need for a downchange.

True, its engine is less impressive when you rev it hard to extract maximum acceleration because it starts to fall off before you get near the rev limiter. However, the C-Class still accelerates quicker than the A4 and DS5 through the gears.

Used Audi A4 vs BMW 3 Series vs Mercedes C-Class vs Citroen DS5

It’s not quicker than the 3 Series, though; rev the engine in this Efficient Dynamics model hard and it feels more like a sports saloon than an eco special.

That feeling doesn’t quite extend as far as the corners, though – mainly because the 3 Series we’ve got here isn’t fitted with the Adaptive M Sport suspension that was available as a £750 option when the car was new.

Used Audi A4 vs BMW 3 Series vs Mercedes C-Class vs Citroen DS5

Without it, the 3 Series lacks the superb agility it’s often known for; the car leans a bit too much and can lose its composure through a series of fast bends, and its body bounces up and down more at speed, so the motorway ride is less comfortable. It’s rare, but if you can find a car with the optional suspension fitted, it’s worth having.

If anything, the C-Class is even more sensitive to the type of suspension it’s fitted with. The SE car tested has a very supple ride at all speeds, but it’s let down by slower steering and sloppier body control than all of its rivals here. By contrast, Sport-spec cars have a firm set-up, so they handle well on twisty roads, but jostle you too much on the motorway.

Used Audi A4 vs BMW 3 Series vs Mercedes C-Class vs Citroen DS5

At least the C-Class is the easiest of the bunch to park; whichever version you choose, its front wheels can be turned to extreme angles and the steering is feather-light at low speed.

The A4’s steering is usefully light for parking, too, but it doesn’t guide you accurately enough in bends. Even Audi’s Drive Select system which was available as an option and lets you play around with the weighting, adds little in the way of feedback. It’s a pity, because there’s plenty of grip and the short-travel suspension keeps the car impressively flat in bends.

Used Audi A4 vs BMW 3 Series vs Mercedes C-Class vs Citroen DS5

Things are even worse in the Citroën, because it has rock-hard suspension that batters you relentlessly on any road that isn’t silky smooth. Such a stiff set-up inevitably keeps the car from rolling around in corners, but the steering is vague and inaccurate, so it isn’t even all that much fun to drive.

At least the DS5 is a tranquil thing to travel in; its engine is the second best damped here, while its laminated windows block out virtually all wind noise. In fact, the only thing that disturbs the peace is some suspension patter over broken surfaces. On the whole, though, it’s the quietest car here.

Used Audi A4 vs BMW 3 Series vs Mercedes C-Class vs Citroen DS5

The quietest engine belongs to the Audi – it’s so smooth when you rev it that you could almost mistake it for running on petrol – but in other respects, the A4 isn’t quite so impressive. It lets in quite a lot of road noise, and there’s the slightest flutter of wind noise down the sides of the car at cruising speeds.

It’s better than the 3 Series, mind you. Not only does the BMW’s 2.0-litre diesel engine sound a bit coarse when you rev it, but the door mirrors generate a fair amount of wind noise at motorway speeds, while a noticeable amount of road roar is also present.

Used Audi A4 vs BMW 3 Series vs Mercedes C-Class vs Citroen DS5

But the C-Class is the loudest car of all. Wind and road noise both find their way into the cabin, while the engine sounds very gruff under acceleration; the din never completely fades into the background, either, even when cruising on the motorway.

To make matters worse, the C-Class has a long-travel clutch with a decidedly vague biting point, which makes it tricky to pull away smoothly and gives gearshifts a ponderous feel. There are no such problems in the 3 Series or A4 – both have smooth and precise gearshifts – but the DS5 is let down by an overly springy clutch and a notchy gearshift.

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Used Audi A4 vs BMW 3 Series vs Mercedes C-Class vs Citroen DS5