BMW 6 Series vs Aston Martin DBS

What's the difference?

This isn't a car for everyone's tastes, but if you fit in to the buyer group that just doesn't really know what they want in a luxury car, it could be the perfect fit for your family. The 6 Series GT is a practical large prestige car, albeit one that will likely find very few buyers.

The Aston Martin DBS Superleggera is an instant classic, likely heading over a high-end auction block in years to come with a final price far higher than the 2020 ask. But don’t buy it as a collector's item, although it is a beautiful object. Buy it to enjoy. Stunningly fast, thoroughly engineered, and beautifully made, it’s a phenomenal car.

There is no denying the 6 Series GT looks better than the old 5 Series GT. It isn't as frumpy, it looks more sporty, and to me it appears to have grown into its identity with more conviction than its predecessor.

That said, I don't necessarily like the look very much - it's a bit like a BMW X6 that has been rounded off a little and lowered down substantially. But I can appreciate some of the finer design aesthetics that it offers up: the frameless windows are a nice touch, and the swooping roofline looks smoother than a duck's back.

Other things like the active grille shutters and the air breathers ahead of the front doors are nice functional touches, and to my eye it lives up to BMW's hope of it looking "smooth but muscular". You can get the 630i with either the M Sport package, like you see here, or the more sedate Luxury Line, which is, well, more luxurious looking.

The M Sport styling and equipment package you see in the images here - with M aero kit and 19-inch wheels (ours had been upgraded to optional 20s) - help out with the athletic look of this very big vehicle.

It's huge in fact. The length of the 630i is 5091mm long, it measures 1902mm wide and sits at 1538mm tall, with a lengthy 3070mm wheelbase.

All that equates to a lot of room in the cabin, and what a sumptuous and delightful place it is to be - leather, wood and plush finishes abound.

The term Superleggera (Italian for Superlight) is normally associated with Italian automotive coachbuilder Carrozzeria Touring, which has historically applied its fine eye and hand-crafted aluminium body technique to a host of local brands, including Alfa Romeo, Ferrari, Lamborghini, Lancia, and Maserati.

As well as some American, German, and British liaisons, the latter covering classic Aston Martin and Lagonda models through the 1950s and ‘60s (your Silver Birch DB5 is ready for you 007).

But rather than hand-beaten aluminium, here the body panel material is carbon-fibre, and the look and feel of this DBS is the product of Aston Martin’s head of design, Marek Reichman (his name might sound German, but he’s a Brit through-and-through), and his team at the brand’s Gaydon HQ.

Based on the DB11 platform the DBS is a fraction over 4.7m long, just under 2.0m wide, and less than 1.3m tall. But it’s only when you’re close to the Superleggera that its intimidating muscularity comes into focus. 

A giant, black honeycomb grille defines the car’s face, and the single-piece forward-hinging ‘clamshell’ bonnet includes a raised central section defined by longitudinal strakes either side, with deep vents above the front axle line to aid the exhaust of hot air from the engine bay below.

Broad ‘shoulders’ around the front wheel arches are balanced by powerful rear haunches to give the car a beautifully proportioned and imposing stance. But there’s scientific function behind this purposeful form, too. 

The Aston vehicle dynamics team went all out with wind tunnel testing, Computational Fluid Dynamics (CFD) modelling, aerothermal and performance simulations, as well as real-world track testing to refine this car’s aero efficiency. 

The DBS Superleggera’s overall drag coefficient (Cd) is 0.38, which is commendably slippery for a brawny 2+2 GT. But it’s the fact that in parallel with that number it’s able to generate a humongous 180kg of downforce (at 340km/h VMax) that’s remarkable.

The aero trickery includes a front splitter and airdam working in unison to accelerate airflow under the front of the car, delivering downforce and cooling air to the front brakes. 

From there the ‘open stirrup and curlicue’ device at the top of the front wheel wells vents air to reduce lift, and create vortices which reattach the aero wake from the front wheels to the side of the car.

The ‘C-Duct’ starts with an aperture behind the rear side glass funneling air through the underside of bootlid to a subtle ‘Aeroblade II’ spoiler at the rear of the car. A close to flat underside also feeds air to an F1-inspired double diffuser under the rear end.

No gaudy wings or giant spoilers, just a subtly effective and thoroughly engineered aero profile.

Slim but distinctively Aston Martin LED tail-lights combine with a series of horizontal character lines across the rear to enhance the car’s visual width, and giant 21-inch dark rims fit the car’s proportions perfectly.

Slipping behind the wheel is the full hand-in-leather glove experience. The broad dashtop is split by a vaguely teardrop shaped centre stack with the classic ‘PRND’ transmission buttons and an illuminated push-button starter in the centre.

The compact instrument binnacle, housing a configurable digital display, imparts a quiet sense of purpose, and the Mercedes-AMG sourced media system, complete with rotary control dial, feels familiar. Overall, simple, subtle, yet hugely impressive.

Now, I said before that this is a bit like an X6, but it has heaps better interior space than that SUV.

As soon as you slide into the driver's seat, you feel like your inside a large car. The cabin space is plentiful, and there's an abundance of storage on offer, too: there's a split-lid armrest between the seats, a pair of cupholders, a phone storage nook with wireless charging, and big door pockets with bottle holsters.

In the back you have access to door pockets, a flip-down armrest with cupholders (that middle part of the seat can fold down completely to allow storage of longer items), and there's excellent room on offer. How many seats in the BMW 6 Series GT? Five - like, five full-size seats.

Because the roofline doesn't rake as sharply as a four-door 'coupe', headroom is excellent for adults (even of the 183cm variety, like myself), and legroom and toe room are equally very good. This is bigger in the back than a 5 Series, but maybe not as plush as a 7 Series… so I guess it makes sense numerically for its nomenclature.

Of course you get climate control in the front (and in the rear if you option it), and the materials are excellent. The media screen is tablet-style, proudly displaying 10.25 inches of high-def real estate that is both touch-capacitive and controllable by way of the central rotary controller with touchpad. And get this - you can even use gestures to control certain elements like volume, swiping and changing tracks… but you have to option that.

The fully digital instrument display is bordered by a set of incomplete dial rings, which is just odd. BMW, back yourself - your buyers can handle just having a digital screen in front of them, particularly when it's as good as this one.

This grandiose hatchback's boot is commodious - with the back seats in place it has a huge 610 litres of cargo capacity, which extends to 1800L with the 40/20/40 seats folded down using the quick release levers in the boot area.

There is no spare wheel (the BMW range is fitted with run-flat tyres) but it does have a secondary hidden storage area under the boot floor for hiding items or stowing wet gear, bathers/swimmers or muddy clothes.

For context, the X6 has 580L seats up, 1525L seats down.

The notion of practicality doesn’t naturally align with a 2+2 GT, but a wheelbase measuring 2805mm means there’s enough space between the axles to provide generous accommodation for front seat occupants at least.

And the usual compromises presented by long coupe doors are reduced by the DBS’s swinging slightly up as they open, and down as they close. A genuinely useful touch.

The driver and front seat passenger are snug but not cramped, which feels right in this context, and they’re provided with a lidded central box, which doubles as an armrest between the seats.

Flick the switch and its power-operated top slides back in stages to reveal two cupholders and a general storage space with a 12V power outlet, two USB-A ports, and an SD card input at the rear.

There’s a small coin tray in front of the multimedia dial in the centre console and long door pockets, but bottles will be a struggle unless you’re happy to lay them on their side.

The ‘+2’ seats scalloped out of the rear bulkhead, look super cool (especially with our car’s Triaxial quilt trim) but for anyone in the vicinity of average adult height they’ll feel distinctly inadequate.

Legs or a head aren’t viable options so this space is best reserved for the kids. And there are two 12V sockets in the rear to help keep their devices charged, and them calm.

Boot volume is a useful 368 litres, and the aperture curves forward at the top which helps with loading larger cases, but remember the rear seats don’t fold.

There are small lockers hidden in the back wall, one containing a flat tyre repair kit, so don’t bother looking for a spare of any description.

The DBS Superleggera is like a finely tailored suit. Impressive, but not flashy, while the finish is impeccable, the materials used are top-shelf, and attention to detail is remarkable. And like anything that’s been carefully crafted and largely hand made, the price is substantial.

Before on-road costs like registration, dealer delivery charges, and compulsory insurance, this Aston will set you back $536,900.

The $500K ballpark contains some heavy-hitting competition, the most closely aligned being Bentley’s 6.0-litre W12-engined Continental GT Speed ($452,670), the 6.3-litre V12-powered Ferrari GTC4 Lusso ($578,000), and Porsche’s 3.8-litre twin-turbo flat-six 911 Turbo S ($473,900). All 2+2s, all insanely fast, and bristling with luxury features.

So, aside from the safety and dynamic tech detailed later in this review, what does this special DBS deliver in terms of standard equipment?

First, there’s the Aston Martin, nine-speaker premium audio system (including 400W amp and digital radio, but no Android Auto or Apple CarPlay), a multimedia system managed via an 8.0-inch LCD screen and console touchpad/dial controller system (sourced from Mercedes-AMG), satellite navigation, a Wi-Fi hub, and a 360-degree camera with ‘Parking Distance Display’ and ‘Park Assist.'

Standard upholstery across the seats, dash, and doors is ‘Caithness’ leather (Aston says a dry-drumming process gives it a particularly soft feel) combined with Alcantara (synthetic suede) and ‘Obsidian Black’ leather on the faceted (think square-ish) sports steering wheel, finished off with the DBS logo embroidered into the headrests. 

The ‘Sports Plus’ performance seats (with memory) are 10-way electrically-adjustable (including lumbar) and heated, the steering wheel adjusts electrically, ‘interior jewellery’ (trim elements) are ‘Dark Chrome’, and cabin inlays are ‘Piano Black.’

Also included are a configurable digital instrument display, dual-zone climate control, keyless entry and start, rain-sensing wipers, cruise control (not adaptive), auto LED (high and low beam) headlights and DRLs, as well as LED tail-lights and dynamic indicators.

The ‘Exterior Body Pack’ consists of gloss-finish carbon-fibre across the rear bumper, bootlid flap spoiler. rear diffuser, and front splitter, and the standard rims are 21inch forged ‘Y spoke’ alloys, with (big) dark anodised brake calipers behind them.

All up, a subtle and exclusive approach to an equipment package that’s as much about the overall quality of the car’s design, engineering, and execution as it is about individual features. 

But on the subject of features, ‘our’ car was kitted out with a series of special options, namely: Bang & Olufsen audio - $15,270, ‘Leather colour option special’ ‘Copper Tan’ (metallic) - $9720, contrast stitching - $4240, vented front seats - $2780, power seat bolsters - $1390, Triaxial quilting - $1390, headrest embroidery (Aston Martin wings) - $830.

That’s $35,620 worth, and there were still other boxes ticked, like a colour keyed steering wheel, smoked rear lamps, plain leather headlining, ‘Shadow Chrome’ rims, even an umbrella in the boot... but you get the idea. 

And if you really want to personalise the car, ‘Q by Aston Martin’ offers a collection of “unique enhancements beyond the scope of the core option range.” Then ‘Q Commission’ opens up a bespoke, atelier-style collaboration with the Aston Martin design team. Possibly an entirely custom car, or just machine guns behind the headlights.

Under the bonnet of the 630i is a 2.0-litre four-cylinder turbocharged petrol engine, which produces 190kW of power (at 6500rpm) and 400Nm of torque (from 1550-4400rpm). It uses an eight-speed automatic transmission, and is rear-wheel drive.

That may not seem a lot considering the size of this machine, but consider that some of the steamiest four-cylinder hot hatches have nearly the same outputs, and you realise this engine offers up a far-from slouched approach to propulsion.

The 640i xDrive has a 3.0-litre six-cylinder turbocharged engine with 250kW of power and 450Nm of torque. It gets the same eight-speed auto, but as the xDrive naming indicates, it's all-wheel drive.

But this is the one you'd prefer if you want to hit highway speed in a hurry - the 0-100km/h claim is 5.3 seconds, where the 630i takes a full second longer (6.3sec) according to the company.

The DBS Superleggera is powered by an all-alloy, 5.2-litre twin-turbo V12, featuring dual-variable camshaft timing and direct-injection to produce 533kW (715hp) at 6500rpm and 900Nm from 1800-5000rpm. 

In line with the personal nature of this car’s build, a brushed metal plaque sits on top of the engine, proudly stating ‘Hand built in England’, and noting that a final inspection was carried out (in our case) by Alison Beck. 

Drive goes to the rear wheels via an alloy torque tube and carbon propshaft to a (ZF-sourced) eight-speed automatic transaxle, incorporating a mechanical limited-slip differential, with manual shifts available via wheel-mounted paddles.

BMW claims fuel use of 7.0 litres per 100 kilometres, and you'll need to use 95RON premium unleaded when you fill up.

On my trip with the car, I saw about 9.0L/100km across mostly high-speed driving - some freeway, some highway, some country back road touring, and quite a bit of corners and city stuff thrown in as well. I think that's pretty respectable.

What wasn't so great was the lack of premium fuel in some of the 'away from civilisation' places on my route home. Keep that in mind if planning your own GT long-distance cruise.

Claimed fuel economy for the combined (ADR 81/02 - urban, extra-urban) cycle is 12.3L/100km, the DBS emitting 285g/km of CO2 in the process.

In just under 150km with the car, covering city, suburban and freeway running (as well as a sneaky B-road session) we recorded an average of 17.0L/100km, which is a sizeable number, but kind of expected for a roughly 1.7-tonne, V12-powered meteor on wheels.

Stop-start is standard, minimum fuel requirement is 95 RON premium unleaded, and you’ll need 78 litres of it to fill the tank (which translates to a real world range of approximately 460km).

I'll put this out there - if you like to drive, there are BMW models for less than this one that will put a much bigger smile on your face. Like, a 440i Gran Coupe, or even just a 330i sedan…

But if you're in BMW's target market - that being older executive buyers who want space and luxury as a priority over thrills at the wheel, you could do a lot worse.

That's because the 6 Series GT lopes along the highway without fuss - the engine easily coping with the demands of overtaking moves, the adjustable drive modes allowing a light steering and wafting suspension feel to wile away the kilometres.

There are 'Comfort' and 'Comfort Plus' modes, but the latter is a bit too spongy and can be boaty feeling. The Comfort setting is made for the highway.

It is actually pretty agile for its dimensions.

If you decide to deviate from the straight sections, you'll be able to explore a little bit of dynamic range, especially when you dial up the 'Sport' mode, which changes the damper settings, steering weight, throttle and transmission response, and even the digital dials in front of the driver to a more aggressive look.

Our car had the 'Integral Active Steering' setting, which is a variable ratio steering system that includes rear steering - that essentially helps make is more turnable in corners at highway speed, and easier to park at lower speeds. It's difficult to say whether the assistance is excellent or not short of driving a car without the tech, but to this tester it was hard to hide the size and weight (1835kg kerb weight) of the vehicle.

That isn't to say it's clumsy or lumbering - it is actually pretty agile for its dimensions, though it makes a lot more sense on long drives and coastal cruises than it does in the narrow and twisty alpine roads of the Snowy Mountains Highway that I tested it on.

There's good grip from the tyres, and strong response from the powertrain - but if it were my money, and I had to have a 6 Series for whatever reason, I'd be looking towards the 640i model, which has a thumping six-cylinder with 250kW/450Nm - certainly an engine that would be more at home in this car. Plus that model comes with AWD.

Once you dip under three and half seconds for the sprint from 0-100km/h strange things happen to your field of vision. Faced with that kind of acceleration, it instantly narrows, your brain instinctively focusing attention on the road ahead because it senses something borderline unnatural is going on.

Claiming just 3.4sec for the DBS Superleggera to hit triple figures (and 0-160km/h in 6.4sec!) we felt obliged to validate the number, and sure enough peripheral vision blurred into nothingness as this brutal machine delivered its shock and awe performance.

And the aural accompaniment is suitably intense, thanks to the electronically-controlled (stainless steel) exhaust, with active valves and quad tail pipes, orchestrating the brilliantly guttural and raucous ‘sound character.’ 

Pure pulling power is immense with all 900Nm of maximum torque available from just 1800rpm all the way to 5000rpm. Mid-range urge is prodigious, and Aston claims the DBS Superleggera will blast from 80-160km/h (in fourth gear) in 4.2 seconds. That’s a number I didn’t verify, but I’m not going to doubt it.

It might share essentially the same bonded aluminium chassis, but thanks to its carbon-rich bodywork the DBS Superleggera is 72kg lighter than the DB11, with a ‘dry’ weight (no fluids) of 1693kg. The engine is also set low and far back in the chassis, to the point where it’s actually a front-mid location, delivering a 51/49 front/rear weight distribution.

Suspension is double (forged alloy) wishbone front, multi-link rear, with adaptive damping standard, and there are three set-up stages available via the flick of a switch on the left-hand side of the steering wheel.

On the opposite side of the wheel a similar mode control allows you to cycle through ‘GT’, ‘Sport’, and ‘Sport Plus’ settings, tuning various functions including the throttle map, exhaust valves, steering, traction control, and shift response. Steering is speed-dependent electrically-assisted.

Brakes are professional grade vented carbon ceramics, with thumping 410mm rotors at the front clamped by six-piston calipers, and 360mm discs at the rear sporting four piston calipers.

Managing this car’s phenomenal thrust as it morphs into lateral g-force, is a surprising experience. Of course, it grips like a Trump handshake, with a specific ‘A7’ version of Pirelli’s ultra-high performance P Zero tyre on a 21-inch forged alloy rim at each corner.

The 265/35s at the front are big, and monstrous 305/30s at the rear deliver a strong mechanical connection with the road. But it’s the car’s steering and overall agility that’s unexpected.

It doesn’t feel like a beefy 2+2 GT. And while it’s not in the 911’s league when it comes to response and dynamic feedback, it’s a long way down that road.

I found Sport and the middle suspension setting to be the backroad sweet spot, and with the seven-speed auto in manual mode the lightweight DBS simply lights up.

Shifts on the way up the ratios via proper alloy paddles in manual mode are rapid and precise, and the car remains stable and balanced, yet entertainingly athletic in enthusiastic cornering.

When squeezed hard on initial application carbon ceramic brakes don’t ‘bite’ in the same way steel discs do, but the system’s ability to rapidly wash off speed, while the car remains in a steady state, is exceptional.

At the same time, shifts down through the gears are accompanied by a variety of aggressive pops and bangs (a feature of Sport and Sport Plus modes) and the DBS points accurately yet progressively into a bend.

Road feel is excellent, the sports front seat is grippy and comfortable, and the car’s ‘Dynamic Torque Vectoring’ (via braking) system chips in to ensure understeer is kept in check.

In a more sedate mode, thanks largely to the active dampers, the Superleggera is surprisingly comfortable around town, despite the big rims and low-profile rubber.

Under the heading of ‘random thoughts’, the simple interior layout (including the spot-on digital instrument cluster) is great, the auto stop-start is a little jerky on restart, and including the front air dam, ground clearance under the nose is only 90mm, so be mega-careful in and out of driveways, or prepare yourself for the sound of scraping carbon (happily avoided this time around).

The Aston Martin DBS hasn’t been assessed by ANCAP or Euro NCAP, but the ‘expected’ array of active safety tech is in place including ABS, EBD, and BA, as well as traction and stability controls.

There’s also blind spot monitoring, a tyre pressure monitoring system, a 360-degree camera with ‘Parking Distance Display’ and ‘Park Assist.’

But more recent crash-avoidance tech like active cruise control, lane-departure warning, rear cross-traffic alert, and most notably, AEB, are missing in action.

If an impact is unavoidable there are eight airbags to help protect you - dual-stage driver and front passenger, front side (pelvis and thorax), front knee, as well as two-row curtain.

Both rear-seat positions offer top tethers and ISOFIX anchors for secure baby-capsule or child-seat location.

BMW runs a condition-based servicing plan, which means the car will tell you when it needs servicing. But you can rest assured it won't (theoretically) cost you much, with the brand's 'Service Inclusive' pack. It covers you for basic maintenance as and when required for five years/80,000km. According to BMW, that includes "annual vehicle checks, oil changes, all filters, spark plugs and labour costs for the duration of the package".

BMW offers a three-year/unlimited kilometre warranty plan, and you get the same cover for roadside assistance.

In Australia, Aston Martin offers a three-year/unlimited km warranty, with 24-hour roadside assistance included for the duration.

Servicing is recommended every 12 months or 16,000km, whichever comes first.

Aston also offers extended service contract options, renewable after 12 months, including features like transfers and accommodation in the event of a breakdown, and coverage while the car is being used at official Aston Martin events.

There’s also a collection and delivery service (or courtesy car) to sweeten the servicing deal.