Skip advert
Advertisement

New Audi S5 Sportback 2020 review

The Audi S5 Sportback’s switch to an advanced diesel engine has resulted in a fast and relaxed 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

Verdict

Styling changes and some worthwhile tech upgrades are integrated well with a huge change for the S5 Sportback’s powertrain. It’s a fast, relaxed and well equipped premium model that has quality at its heart, but also balances performance from a strong, advanced engine with rationality in terms of its efficiency. The handling is sure-footed, but we just wish the ride was a little more forgiving.

Advertisement - Article continues below

A quick glance at the new Audi S5 Sportback might have you thinking it’s nothing more than a light makeover on the outside and a new infotainment system grafted to the dash. But you’d be wrong, quite wrong.

While those things are undoubtedly true, underneath the big, five-door hatchback’s striking, sharply styled new skin lie a lot of impressively detailed engineering changes In its simplest form, the old S5 was a petrol, but this new car is now a diesel.

It uses a 3.0-litre turbocharged V6, with new Electric Powered Compressor (EPC) tech. That means a small electric motor ramps up the turbo’s compressor wheel to 65,000rpm in just 300 milliseconds.

These figures will be indecipherable to many, but what we can tell you is that it gives the big, gutsy engine impressively sharp response to your demands with the accelerator at low revs. At higher revs the variable-geometry turbo works as normal, being driven by the exhaust gas, for lots of smooth performance.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

iX3

2024 BMW

iX3

46,643 milesAutomaticElectric

Cash £28,138
View iX3
iX3

2024 BMW

iX3

38,698 milesAutomaticElectric

Cash £25,441
View iX3
iX3

2021 BMW

iX3

69,617 milesAutomaticElectric

Cash £19,503
View iX3
iX1

2026 BMW

iX1

13,201 milesAutomaticElectric

Cash £27,168
View iX1

With 342bhp and a whopping 700Nm of torque, when the S5 climbs on boost – which it does, quickly – it romps forward. The 0-62mph sprint takes 4.9 seconds, which is an impressive stat in itself, but the car’s in-gear acceleration and mid-speed flexibility are really where the main thrust of the performance lies.

Advertisement - Article continues below

Applying new technologies such as EPC to the traditional turbodiesel engine proves there’s life in this form of propulsion yet. It’s also been partly facilitated by a switch to a new 48-volt electrical system, meaning the S5 is a mild hybrid.

Combined with a small 0.5kWh lithium-ion battery in the boot, the belt alternator starter helps take a little bit of load off the engine in certain situations for improved efficiency. Between 34mph and 99mph, the engine can completely shut down, and the car can coast for up to 40 seconds.

However, there are a few aspects of the S5 Sportback’s repertoire that leave a little to be desired. On the whole, the ride is fine. The £1,000 Sport Suspension’s adaptive dampers contain the car’s body over big, rolling undulations well in Comfort mode. But over sharper bumps, the ride shows just an edge of harshness.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

On the motorway, the S5 feels settled and stable, while on country roads there’s agility and iron-rod precision (helped by the sport differential and Dynamic Power Steering options – the latter means it turns quickly when you’re in Dynamic mode) that’s surprising from a performance-focused model that’s not a full-on Audi Sport RS product. With quattro four-wheel drive, there’s plenty of security too.

Advertisement - Article continues below

Inside, carbon-fibre inlays add a touch of sportiness to the exemplary level of quality we’ve come to expect from Audi’s interiors. Meanwhile, the overhauled and enlarged 10.1-inch touchscreen and even sharper graphics for the 12.3-inch Virtual Cockpit digital dash mean this is one of the most tech-focused cabins in this sector.

The MMI system responds quickly, offers lots of functionality and smartphone connectivity – with Apple CarPlay, Android Auto and wireless charging as standard – while the screen resolution is great.

Despite the tapering roofline and narrower glasshouse that give the S5 Sportback its trademark look, there’s still enough head and legroom in the rear, while the 430-litre boot is generous, if not massive. One major plus point, though, is that the Sportback’s huge hatch means loading is easy.

At £53,625, the S5 Sportback isn’t cheap, but that’s the price you pay for style. Focus on the tangible factors – the impressive list of standard kit, the easily accessible performance blended with strong economy, and the solidity with which the car drives – and it’s easier to rationalise.

Model:Audi S5 Sportback 
Price:£53,625
Engine:3.0-litre V6 turbodiesel
Power/torque:342bhp/700Nm
Transmission:Eight-speed automatic, four-wheel drive
0-62mph:4.9 seconds
Top speed:155mph
Economy:40.4mpg
CO2:183g/km
On saleNow
Skip advert
Advertisement

Sean’s been writing about cars since 2010, having worked for outlets as diverse as PistonHeads, MSN Cars, Which? Cars, Race Tech – a specialist motorsport publication – and most recently Auto Express and sister titles Carbuyer and DrivingElectric. 

New & used car deals

MG MG4

MG MG4

RRP £27,005Avg. savings £5,225 off RRP*Used from £10,490
Audi A3

Audi A3

RRP £26,310Avg. savings £2,444 off RRP*Used from £10,195
Volkswagen Polo

Volkswagen Polo

RRP £14,495Avg. savings £2,393 off RRP*Used from £7,300
Toyota Yaris Cross
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Have you considered?

New Porsche 911 GT3 S/C review: a triumph of an open-top sports car
Porsche 911 GT3 S/C - front

New Porsche 911 GT3 S/C review: a triumph of an open-top sports car

Road tests
7 Jul 2026
BMW 2 Series Coupe review
BMW 2 Series Coupe - front tracking

BMW 2 Series Coupe review

In-depth reviews
17 Jun 2026
New BMW M240i 2026 review: as engaging as ever, even with hybrid power
New BMW M240i - front 3/4

New BMW M240i 2026 review: as engaging as ever, even with hybrid power

Road tests
4 Jun 2026

Most Popular

New Dacia Striker 2026 preview: prices, specs and release date
Ellis Hyde with the Dacia Striker

New Dacia Striker 2026 preview: prices, specs and release date

The rugged yet athletic estate car is, in essence, an Audi A6 Allroad for a third of the price
News
9 Jul 2026
Car Deal of the Day: Big-battery Citroen e-C3 Aircross for a tiny £154 a month
Citroen C3 Aircross UK - full front

Car Deal of the Day: Big-battery Citroen e-C3 Aircross for a tiny £154 a month

The Citroen e-C3 Aircross offers space and a decent electric range for a low price. It’s our Deal of the Day for July 8
News
8 Jul 2026
New XPeng X9 seven-seat MPV to offer Lexus luxury for £25k less
XPeng X9 - front static

New XPeng X9 seven-seat MPV to offer Lexus luxury for £25k less

China’s latest premium electric MPV has 380 miles of range, ultra-fast 800v charging and space for the whole family
News
7 Jul 2026