Skip advert
Advertisement

New Audi S5 Cabriolet 2017 review

Muscular Audi S5 Cabriolet drop-top is fast, but not engaging enough to drive

Find your Audi S5
Compare deals from trusted partners on this car and previous models.
Or are you looking to sell your car?
Value my car
Fast, no-nonsense car selling
Value my car

Make no mistake: the new Audi S5 Cabriolet is a fast, desirable and extremely high-quality piece of kit. It’s capable and composed, too, but despite Audi’s best efforts, it still isn’t as sharp to drive as the Coupe. The extra aural appeal of the V6 with the roof down is welcome, yet as a fast cruiser, the 3.0-litre diesel is a more likeable and rounded product – as well as being cheaper to buy and run.

Advertisement - Article continues below

This new and improved S5 Cabriolet joins the coupe and Sportback as the final instalment of the Audi S5 range, and is designed to take on the Mercedes-AMG C 43 Cabriolet and BMW 440i Convertible.

Like the A5 Cabriolet we drove recently, the S5 sits on Audi’s newest MLB Evo platform, with larger exterior dimensions but a reduction in weight over its predecessor. The S5 is 40kg lighter – although it’s still a substantial 225kg more than the coupe, due to the added strengthening required by the removal of the roof. Audi claims it’s 40 per cent stiffer than before, too.

The extra weight over the coupe means performance suffers, on paper at least. Despite the 349bhp 3.0-litre turbocharged V6’s best efforts, 0-62mph takes 5.1 seconds, which is four-tenths slower than the hard-top.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

X2

2020 BMW

X2

25,011 milesManualPetrol1.5L

Cash £16,997
View X2
GLA

2022 Mercedes

GLA

10,485 milesAutomaticPetrol1.3L

Cash £24,697
View GLA
A3 Sportback

2023 Audi

A3 Sportback

36,061 milesManualPetrol1.0L

Cash £16,197
View A3 Sportback
A1 Sportback

2023 Audi

A1 Sportback

32,587 milesManualPetrol1.0L

Cash £14,997
View A1 Sportback

Best convertible cars on sale

For the most part, however, you’d be hard-pushed to tell the difference; it feels just as strong, firing through the dual-clutch gearbox’s eight ratios thanks to the healthy 500Nm of torque. 

With the roof down, your ears get full access to that tuneful V6 while the exhaust pops and bangs on the overrun. That’s the key benefit of the drop-top over the coupe; it adds a little bit of drama that was previously in short supply.

Don’t think that makes it more of a driver’s car, however. Audi has slightly softened the suspension of the Cabriolet to ward off body shimmies associated with losing the roof. It rides with a firm but controlled fluidity most of the time as a result, but some shake is still evident over really rough roads, and the softer set-up introduces a touch more body movement.

It’s more suited to taking it easy, then – but in that case, the torquey and smooth V6 diesel seems to be the better fit.

Elsewhere, there’s little to complain about. The fabric soft-top folds quickly and can be operated at up to 31mph, while the cabin remains smart and the build quality is first-class. There’s even a decent amount of space for four adults. 

But there’s nothing that you couldn’t find on lesser A5 cabriolets; the range starts from just over £35,000, so you needn’t spend the extra £15,000 to secure the S5.

Skip advert
Advertisement

New & used car deals

MG MG4

MG MG4

RRP £27,005Avg. savings £6,825 off RRP*Used from £9,795
Skoda Kodiaq

Skoda Kodiaq

RRP £39,025Avg. savings £3,970 off RRP*Used from £8,970
Vauxhall Corsa

Vauxhall Corsa

RRP £19,855Avg. savings £5,488 off RRP*Used from £9,630
Volkswagen Tiguan

Volkswagen Tiguan

RRP £38,030Avg. savings £3,575 off RRP*Used from £11,458
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

SEAT Arona vs Hyundai Bayon: Cheap 'n' cheerful small SUV showdown
SEAT Arona vs Hyundai Bayon - front tracking

SEAT Arona vs Hyundai Bayon: Cheap 'n' cheerful small SUV showdown

SEAT has updated its long-running Arona SUV and Hyundai’s done the same with the slightly younger Bayon. We find out which one is best.
Car group tests
28 Mar 2026
Dacia targets 30% more UK car sales, thanks to good-value, larger cars
Dacia Striker- full front

Dacia targets 30% more UK car sales, thanks to good-value, larger cars

Dacia’s UK boss speaks to Auto Express about her bold plans to seize market share
News
27 Mar 2026
New Citroen 2CV: icon to be reborn for the electric era, and it’s coming soon
Citroen 2CV exclusive image 2026

New Citroen 2CV: icon to be reborn for the electric era, and it’s coming soon

The planets are aligned! Retro design buzz and rules promoting small EVs will see Citroen's most famous car rebooted
News
30 Mar 2026