BMW 440I vs Audi S4

What's the difference?

Is now the right time to buy a 4 Series coupe? With the next-generation model a matter of months away, probably not.

That said, those buyers who decide to park a new ‘old’ 4 Series coupe in their driveway will be very pleased with their purchase.

At the end of the day, the current-generation model is still a cracking sports-luxury coupe, and more so when in 440i form. It’s just that good.

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The first-generation 4 Series coupe has aged relatively well, despite sharing most of its design cues with the superseded sixth-generation 3 Series sedan.

Compared to current BMW models, the 4 Series coupe’s signature kidney grille is small, flanked by angry-looking adaptive headlights with hexagonal daytime running lights, all of which are of the LED variety.

The 440i’s standard M Sport body kit adds to the aggressive styling with chunky front bumper with three large air intakes, the outer two of which also contain the LED fog lights.

Around the side, a strong shoulder line stretches from the front wheel arches to beyond their rear counterparts, while BMW’s Air Curtains split the difference between it and the sporty skirts.

The rear end is the 440i’s simplest angle, although its bumper is spruced up with a dark-grey insert and dual exhaust tailpipes. Predictably, L-shaped LED tail-lights punctuate the styling at the rear.

Inside, the 4 Series coupe is holding up well, but it's still clearly a generation behind most other new BMW models.

That said, it’s a throwback we quite like, particularly iDrive6, which is still arguably BMW’s best multimedia system to date. Powering a floating 8.8-inch touchscreen in this instance, it’s just so intuitive, partly thanks to its rotary controller.

An 8.8-inch digital instrument cluster is a late-life addition for the 440i, and while it looks great with its drive mode-specific views, it lacks the breadth of functionality of Audi’s set-up.

The 4 Series coupe’s cabin is otherwise pretty basic despite its apparent emphasis on sportiness, although the selection of luxurious materials used throughout is top-notch.

The entire dashboard, chunky M Sport steering wheel and old-school handbrake lever are trimmed in high-quality leather, while lower-quality Dakota leather covers the sports seats, armrests and door inserts.

Soft-touch plastic is used for the door shoulders and bins, even in the second row, while hard plastic is limited to the centre console, and gloss-black trim is used on the centre stack’s audio and dual-zone climate control surrounds.

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.

Measuring 4640mm long, 1825mm wide and 1377mm tall, the 440i coupe is a true mid-sizer, and that means it’s surprisingly practical – for the most part.

Cargo capacity is more than solid, at 445L, but stow the 60/40 split-fold rear bench via a pair of manual latches located in the boot and more storage space is quickly liberated.

To make matters even better, the boot has two bag hooks and four tie-down points, making securing a load a cinch. That said, the high load lip means bulkier items can require a little more effort to accommodate.

Up front, the door bins are large enough for a regular bottle each, while a pair of cupholders separate the gear selector from a seriously shallow storage tray.

The central storage bin is on the shallow side, too, albeit not to the same degree as the dedicated storage tray. That said, much of its space can be taken up by the optional wireless smartphone charger ($200), which was fitted to our test car.

The glovebox tries its best to make up for the lack of genuine in-cabin storage options by being quite large, while storage nets are attached to the backs of the front seats.

Rear occupants can also make use of a large storage tray that resides where a middle seat would otherwise go. They also have access to a fold-down central armrest that incorporates two more cupholders.

Speaking of armrests, the rear side ones are incredibly narrow, leaving tired elbows in a bit of a pickle.

It’s not all bad news in the second row, though, as legroom and toe-room behind our 184cm driving position are very generous, with the former offering several inches of wriggle room.

We’d go as far as to say the rear quarters are comfortable, but that would require ignoring the fact that headroom is seriously compromised with the optional power-operated sunroof ($3000) fitted, with our head pressed firmly against the 440i coupe’s Anthracite roofliner.

Either way, child seats can be fitted in the second row, with ISOFIX anchorage points available for the outer seats. Speaking of which, it’s worth noting ingress and egress to the rear bench isn’t too bad, with the front seats folding forward via manual latches.

Connectivity-wise, two USB-A ports are found in the first row, split between the centre stack and the central storage bin, while three 12V power outlets are spread across the front and rear of the centre console, and the boot.

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.

As I mentioned above, the S4 and S5 line-up are in many ways the same, but also different, and these differences result in a price span of $20,500 between the S4 sedan and the S5 Cabriolet. 

The former is now $400 cheaper with a list price of $99,500, with the also-$400 cheaper S4 Avant not far beyond at $102,000.

The S5 Sportback and Coupe are now $600 more expensive at an equal list price of $106,500, while the swish folding soft top of the S5 Cabriolet pushes it up to $120,000 (+$1060).

Equipment levels are consistent across all five variants aside from the S5s getting Matrix LED headlights as standard and one inch larger 20-inch wheels. 

Key details include Nappa leather trim with front sport seats with seat heaters and massage function, a Bang & Olufsen sound system which spreads 755W across a total of 19 speakers, brushed aluminium inlays, head-up display, coloured ambient lighting, tinted windows and metallic paint.

Over the past 12 months, the S5 Sportback has proven to be the most popular of the five variants by far, accounting for 53 per cent of sales, with the S4 Avant next in line at 20 per cent, the S4 sedan making up 10 per cent, and the S5 Coupe and Cabriolet combining to make up the remaining 17 per cent.

The 440i coupe is motivated by a silky smooth 3.0-litre turbo-petrol in-line six-cylinder engine that punches out 240kW of power at 5500rpm and 450Nm of torque from 1380-5000rpm.

An equally silky smooth eight-speed torque-converter automatic transmission exclusively sends drive to the rear wheels – a characteristic that has become a rarity in this segment.

This combination helps the 440i coupe sprint from a standstill to 100km/h in a scant five seconds flat with launch control engaged, according to BMW. Its top speed is electronically limited to 250km/h.

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 440i coupe will drink a claimed 6.8 litres per 100 kilometres on the combined cycle, while its carbon dioxide emissions are 159 grams per kilometre.

Our week of testing skewed towards city driving over highway stints, and we averaged 8.6L/100km, which is impressive given the six-cylinder performance on offer. And yes, we did put it to use...

The 440i coupe's 60L fuel tank takes 95RON petrol at minimum.

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.

The 440i coupe toe the line between sports car and luxury vehicle very, very well.

The straight-line performance is definitely there thanks to its in-line six-cylinder unit, which is one of our favourite engines in any vehicle – period.

From top to bottom, the 3.0-litre unit is absolutely delicious. Maximum torque kicks in just above idle and remains on tap deep into the top end, at which point a fleeting moment of peak power is just 500rpm away. Needless to say, acceleration is strong.

Remarkably, the engine’s twin-scroll turbo exhibits next to no lag, making for a unit that you truly want to wring out. That said, don’t expect aural pleasure when you do so, as the sound it generates is lacklustre. Yep, no enticing crackles or pops are heard here.

The automatic transmission ties everything together beautifully, providing timely, quick and smooth gear changes on the regular, even without its Sport mode engaged. And, of course, there are paddle-shifters on hand if you want to take matters into your own hands – literally.

Given the 440i coupe’s apparent performance bent, you’d be forgiven for thinking it rides like an unforgiving sports car. Well, the good news is it doesn’t.

Consisting of MacPherson-strut front and multi-link rear axles with adaptive dampers, its independent suspension set-up stands up really well to Australian roads.

While potholes and coarse-chip roads would usually be met with hesitation, the 440i coupe silences the doubters with its composed ride. Can you feel them? Yes, but they’re relatively muted, especially in a car with sporty aspirations, like this one. 

Cornering is a lot of fun, too, thanks to excellent body control. Tip its 1555kg kerb weight into a corner with intent and you’re quickly reminded why SUVs are nowhere near this fun to drive.

Simply put, the 440i coupe loves a twisty stretch of road, where its M Sport brakes (front: four-piston fixed callipers, rear: two-pot floating stoppers) and traditional rear-wheel-drive dynamics come out to play.

This experience is enhanced by its superb electric power steering, which is speed-sensitive, meaning it’s quick at low speed, for improved manoeuvrability, and ‘slow’ at high speed, for improved stability.

We absolutely adore this particular system, mainly because of its perfect weighting and surprising amount of feel. And in a surprise to no-one, it also turns in really well, too.

Of course, if you want to take the 440i coupe’s handling to the next level, you can engage its Sport drive mode, which stiffens up the adaptive dampers for even flatter cornering and adds more heft to the electric power steering. But we’d say both are unnecessary.

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.

All S4 and S5 variants boast an impressive array of safety features, but there’s some interesting points when it comes to ANCAP ratings. Only four cylinder A4 models (therefore not S4) were given a maximum five star rating when tested according to less stringent 2015 standards, but all A5 variants (therefore S5) aside from the Cabriolet carry a five star rating based on the tests applied to the A4. So officially, the S4 is not rated, but the S5 Coupe and Sportback are, but based on the A4 rating that doesn’t apply to the S4. As with most convertibles, the Cabriolet is simply not rated. 

The airbag count totals eight in the sedan, Avant and Sportback, with dual front airbags, plus side and curtain airbags covering front and rear.

The Coupe drops the rear side airbags, while the Cabriolet also drops curtain airbags, meaning there’s no airbags for rear seat occupants. The roof is made of folding fabric, there has to be some safety compromise.

Other safety features include front AEB that works up to 85km/h, adaptive cruise control with traffic jam assist, active lane guidance and collision avoidance assist that can automatically swerve, a 360 degree camera system, rear cross-traffic alerts, exit warning that can prevent you opening a door into an oncoming car or cyclist, and pre sense rear that can detect an impending collision from behind and prepare the seatbelts and windows for maximum protection.

As with all BMW models, the 4 Series comes with a three-year/unlimited-kilometre warranty with three years of roadside assistance, both of which are two years short of the premium standard now set by Mercedes-Benz.

The 440i coupe’s service intervals are every 12 months or 15,000km, whichever comes first. Owners can opt for a $1650 five-year/80,000km capped-price servicing plan, which is well-priced.

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.