Audi S4 vs Peugeot 508

What's the difference?

The S4 and S5 range continues to represent a great formula for performance you can live with every day. They're arguably the sweetest balance Audi produces, actually. All come fantastically equipped, with cabins that feel truly special, and we’re lucky they can be had in a choice of five bodystyles.  

The Peugeot 508 Sportswagon GT PHEV proves wagons can be extremely stylish but looks aren’t everything and it is an expensive option compared to its luxury rivals. It earns its place with the premium interior but the safety could be improved on and the tech is more confusing than it needs to be. But this wagon offers an alternative for families who are sick of being in an SUV yet still need a little extra space. 

My son didn’t go nuts over this and complained about his view.

The S4 sedan and Avant have scored the bulk of design updates, with all new and recontoured side panels including the sedan’s C-pillar matching what was applied to the A4 earlier this year. 

This is paired with new front and rear facias and lighting for a subtle but extensive rework of the fifth-generation S4’s conservative look. 

The S5 Sportback, Coupe and Cabriolet get S5-specific new lighting and facias, but no sheetmetal changes. As before, the Coupe and Cabriolet ride on a 60mm shorter wheelbase than the Sportback, sedan and Avant.

The S5s also get Matrix LED headlights as standard which do a neat animated sequence when you unlock the car. 

Other visual hallmarks include new S4-specific 19-inch wheels, with S5 stepping up to its own unique 20-inch wheel. The six-piston front brake calipers are appropriately painted red, and there’s S-specific adaptive dampers under there too. All variants aside from the Cabriolet get a lip spoiler on the rear.

On the inside, there’s a new centre console and bigger 10.1-inch multimedia screen, while the Audi Virtual Cockpit driver instrument display now offers a hockey stick-style rev counter in additional to traditional dial layouts.

The design of this wagon is what wins it the most points. It is a damn fine specimen with the sleek lines in the body panelling and the sexy rear that looks well-proportioned for its 4790mm length.

Dark, narrow windows, 18-inch alloy wheels and a minimalist-looking nose, with fang-like daytime-running lights, all enhance its sporty look.

The rear lights have Peugeot’s signature ‘claw’ design and there’s something suggestively fun about seeing a twin-exhaust on a wagon!

On the interior, the multimedia system takes centre stage and the dashboard looks quite sleek, despite all of the deep cutaways.

The steering wheel is in the compact style that Peugeot is known for but it makes the cockpit feel driver orientated.

The quilted Nappa leather trims and shiny piano-black accents (with the piano-key controls) make for a refined cabin space.

The biggest practicality change among the five S4 and S5 variants is their upgrade to the latest version of Audi’s MMI multimedia system, which steps up to a 10.1-inch touchscreen and drops the scroll wheel from the centre console.

It also boasts ten times the computing power of the version it replaces and uses this and an on-board sim card to access Google Earth maps for navigation and Audi Connect Plus that offers driver information such as fuel prices and parking information as well as point of interest search and weather information, plus the ability to make emergency calls and seek roadside assistance.

There’s also a wireless phone charger, but using Apple CarPlay will still require a cord as per Android Auto.

I only drove the S4 Avant and S5 Sportback at their media launch, which are clearly the most practical of the five, but from our experience with the previous versions, each looks after its occupants well in terms of space and storage. Back seat accommodation is clearly not a priority in the Coupe and Cabriolet, but there’s three other variants if that’s what you’re looking for. 

The Cabriolet can open its automatic folding soft top within 15 seconds, at speeds of up to 50 km/h.

The front row gets the most space and you’ll be able to get into a comfortable position even if you’re tall.

However, it is a low car with its 142mm ground clearance and there may be a few grunts as you get in and out (or is it just me?).

My seven-year old loves how easy it is to climb in, though he didn’t have the best view out of the windows because the sills sit high.

The footwell lip also sits quite high, which isn’t an issue until you can’t open your door very wide and then it’s clumsy in a tight parking space.

The electric front seats are very comfortable and the extendable under-thigh support helps to minimise leg fatigue on a longer journey.

Surprisingly, for my 168cm (5'6") height, I have to sit much further back than I ordinarily would to get a comfy driving position.

In the back, you have plenty of headroom but behind my driving position, the legroom could be better.

An adult would still find it fairly comfortable on a longer journey so long as they aren’t behind someone tall. The seats themselves are well-cushioned and you sit in, rather than on top of them.

Individual storage options are good for this class with a dual-opening middle console, glove box and a great utility cubby next to the transmission shifter.

There is also a shelf underneath the centre console that houses the wireless charging pad and two USB-A ports but it’s a tad awkward to use and even see the ports when you're seated.

The amenities are good in the rear but for a top-spec model it’s lacking the luxury items you might expect, like heated seats and climate control but you’ll enjoy map pockets, reading lights, two USB-A ports and directional air vents.

It also has a fold-down armrest with two shallow cupholders, that in a quick turn, might spill their cups!

The boot is a great size at 530L with all seats in use and you can bump it to 1780L with the rear seats folded.

You get a level loading space and a 60/40 split with a ski-port in the back seat, which opens up your storage options.

There is a tyre repair kit rather than a physical spare but the tailgate is powered, which I always like.  

The technology is a mixed bag. It looks sharp and the touchscreen multimedia system is responsive but isn’t as easy to use as others I’ve sampled.

It doesn’t have a lot of accessible information or customisations available but it is easy to connect to the wired Apple CarPlay. There is also wired Android Auto for those users and built-in satellite navigation. 

The 12.3-inch digital instrument panel is the prettiest piece of tech in the car and there is more customisation available to make it feel yours.

Considering its price point and top-model status, it's more obvious that you miss out on premium items like three-zone climate control, faster USB-C connections and a head-up display.

Keeping things simple, there are only two variants for the 508 Sportswagon and our test vehicle is the top GT plug-in hybrid model that will cost $82,915 before on road costs.

That’s a $1000 price hike from last year and sets it well above its rivals with the Audi A4 coming closest at $78,169 (MSRP).

Given its rivals are well known for their luxury, the 508 has a fair bit to live up to but its styling and use of premium materials, like the quilted Nappa-leather trims, help it earn its position within the ranks.

The interior gets some other lovely big-ticket items with the eight-way electric front seats and a two-way memory position function on the driver’s seat.

Both front seats feature a heat function, adjustable lumbar support and a fabulous massage function. The ‘Cat Paw’ option is particularly nice!

However, the back seat misses out on these ‘top-end’ creature comforts.

There is a sunroof optioned on our test vehicle which adds $2500 to the price tag but creates an airy cabin in what would ordinarily be a bat-cave-esque space with that black headliner.

Only one colour is included in the price and our ‘Pearl White’ costs an extra $1050.

Technology has been revitalised with a new 10-inch touchscreen multimedia system and a 12.3-inch digital instrument cluster.

Dual-zone climate control, push-button start, keyless entry and a powered tailgate all add some practicality to every day life, too.

Phone mirroring tech like wired Apple CarPlay and Android Auto are easy to connect to and there are a bunch of charging options available throughout the car, including a wireless charging pad up front.

All-in-all, though, the features list isn’t as long as the price point might suggest.

Audi has taken an ‘if it ain’t broke’ approach with the mechanicals, with all S4 and S5 models unchanged with this update. So the centrepiece continues to be the single-turbocharged 3.0-litre V6 that produces 260kW and 500Nm, with the latter available from a broad 1370-4500rpm.

The rest of the drivetrain is also unchanged, with the venerable but excellent ZF eight-speed torque converter auto paired with the Quattro all-wheel drive system that can send up to 85 per cent of drive to the rear wheels. 

The GT plug-in hybrid model has a 1.6-litre, four-cylinder turbo-petrol engine, as well as an electric motor that sits on the front axle. It has an eight-speed automatic transmission that produces smooth gear changing driving the front wheels.

The combined outputs are 165kW and 360Nm which means you have a good amount of power for this sized car but it’s not a performance wagon as its 0-100km/h sprint time is 8.3 seconds.

The lithium-ion battery has a small 11.8kWh capacity and will get from 0-100 per cent in three and a half hours on an 11kW system. On my standard house plug, it took closer to six and a half hours.

Official combined fuel figures range from 8.6L1/00km for the S4 sedan to 8.8L/100km for the Avant, Coupe and Sportback, while the heavier Cabriolet steps up to 9.1L/100km. 

All are pretty good considering their performance potential and the size of these cars, plus the fact that they only require 95 RON Premium Unleaded fuel.

All have a 58-litre fuel tank, which should enable a range of at least 637km between fills based on the Cabriolet’s figure.

Peugeot says you can travel up to 55km on pure electric function, however my morning (return) school run is 38.4km and the electric range was spent by the time I parked in my garage after starting on a full charge. 

Under optimal conditions, where you’re utilising both the engine and motor, the GT PHEV has an official fuel cycle consumption of 1.5L/100km.

After charging it three times, travelling 444km on a mix of open/urban roads and using 33 litres of fuel, my real-world usage came to 7.4L/100km.

You absolutely get the best economy when you regularly charge it but sometimes you just don’t get the time to!

You'll need 43 litres of premium 95 RON unleaded fuel to fill the tank which, using our real-world average consumption figure, translates to a driving range of around 580km.

The S4 and S5 range were already an excellent balance between everyday comfort and a genuine sporting edge, and nothing has changed with this update.

I spent time behind the wheel of the S4 Avant and S5 Sportback at their media launch, and both managed to deliver the proper Audi luxury experience over some pretty rough rural roads, while always feeling a bit more sporting than a regular A4 or A5. That’s with the Drive Select left in the default mode, but you can shift that sporting personality up a few notches (while scaling back the comfort), by selecting Dynamic mode. 

My preferred means of adjusting their personality is by simply tugging the transmission selector back to activate S mode, which livens up the engine and transmission without stiffening up the suspension. 

Across the five S4 and S5 bodystyles, there is some variance in performance potential, with the S4 sedan and S5 Coupe topping the performance chart with 0-100km/h boasts of 4.7s, with the S5 Sportback trailing them by 0.1s, the S4 Avant by a further 0.1s and the Cabriolet managing a still-fast 5.1s claim.

Another area I consider the S4 and S5s to get just right is their exhaust note. It is adaptive, but there’s nothing synthetic about it, and the generally muted and distinctly V6 burble is always there to remind you that you’re aboard a proper performance model, but not in such a way that it will annoy you, or your neighbours. Polite performance, if you will.

The 508 Sportswagon is an odd car to drive. Around the city, the steering makes it feel like you’re in a go-kart and you may over-correct until you get used to it. 

On the open-road, it feels like it gets into its groove but the power reserves feel a tad too shallow as the engine can complain with only a light load. 

The suspension is well padded and you won’t notice too many bumps but you do get a fair bit of wind and road feedback at higher speeds. 

Because of the narrow windows, I am surprised by how great the visibility is but you feel tiny when you sit next to a big SUV in traffic!

That said, it corners beautifully and taking this on a winding coastal road is super fun.

The brakes are very responsive, which is great in stop-start city traffic but can make it feel a little jerky while navigating a car park.

And on that note, because of the funky steering feel, it takes a moment to calibrate your senses with what the car is doing.

Once you get used to it, it’s simple to park but the quality of the 180-degree camera system is pretty rubbish for where this car sits in the market.

The 508 has most but not all of the safety features you expect to see in a family car.

The active bonnet is a great feature as it lifts up in a collision to help minimise pedestrian injuries. 

However, in the modern market and this being a top-spec model, I am surprised it's lacking a few safety features, namely rear cross-traffic alert.

Other standard safety equipment includes blind-spot monitoring, LED daytime running lights, forward collision warning, lane keeping aid, lane departure warning, intelligent seat belt reminders, front and rear parking sensors, a 180-degree view reversing camera, traffic sign recognition, a driver attention monitor, and adaptive cruise control with stop and go functionality.

The 508 has a maximum five-star ANCAP safety rating from testing done way back in 2018 and it only sports six airbags, which is low for a family vehicle.

The 508 has autonomous emergency braking with car, pedestrian and cyclist detection and is operational from 10.0– 80km/h (5.0 – 140km/h for car).

There are ISOFIX child seat mounts on the outboard rear seat positions and three top tethers in the second row but two child seats will fit best. Front passenger comfort may be compromised when a 0-4 rearward facing child seat is installed.

Audi continues to offer a three year, unlimited kilometre warranty, which is in line with BMW but lags behind the five years offered by Mercedes-Benz these days. This also contrasts with the five year norm among mainstream brands, which is punctuated by the seven year warranties of Kia and SsangYong.  

Service intervals are a convenient 12 months/15,000km though, and the same five year ‘Audi Genuine Care Service Plan’ offers capped price servicing for the same $2950 total over five years applies to all S4 and S5 variants. This is only marginally more than the plans offered for regular petrol A4 and A5 variants, so you’re not being stung for the thoroughbred versions.

On the 508 you’ll enjoy a five-year/unlimited km warranty and the battery is covered by an eight-year or up to 160,000km warranty, which is great.

You can pre-purchase either a three- or five-year servicing plan and the five-year plan costs a flat $2100 or an average of $420 per service which is very reasonable for this class. 

Servicing intervals are at every 12months or 20,000km, whichever occurs first.