Review of the new Audi A8 3.0 TDI quattro

PIECES OF EIGHT

AUDI A8 3.0 TDI QUATTRO

star rating 8.5 out of 10 (8.5 out of 10)

REVIEW DATE: 08 Sep 2010

Most UK Audi A8s come with 3.0-litre TDI diesel power and quattro 4WD. Jonathan Crouch finds out why

Audi A8

AUDI A8 3.0 TDI QUATTRO NEW CAR ROAD TEST

The A8 is Audi's largest luxury saloon which in third generation guise goes up against better established rivals with an astonishing arsenal of technology. There's enough here to please the most demanding boardroom buyer and arguably the best all-rounder in the range is this variant, the 3.0-litre TDI quattro diesel model. Let's find out why.

The A8 was where it all started for Audi, a landmark luxury saloon launched back in 1994 that proved at last that this German marque really could match - and in some areas beat - its better-established rivals. It was then (and still is) the only car of its kind to be constructed around an aluminium spaceframe, lighter and stronger than its rivals for what the Ingolstadt brand calls 'a responsible approach to luxury'. The second generation version, launched in 2003, gave us a better idea of what that meant, with a slightly softer and more user-friendly approach to hi-tech efficiency. But it wasn't quite enough. Rivals - Mercedes' S-Class, Jaguar's XJ, even BMW's 7 Series - well, they may not always have been able to match the A8 on paper but for many buyers, they were that bit more appealing in the driveway. A further evolution was needed - this Mk3 model, which arrived in 2010.

This is still Audi's flagship, even if it's no longer the most expensive car the company makes, and as such, it must showcase the technology that the brand hopes will lift it clear of its two closest German competitors. So its structure is lighter yet more rigid and it's faster yet more fuel efficient. Top executives, Audi promises, will also find it has a wider breath of abilities than its rivals: where a Mercedes S-Class is all about luxury and a Jaguar XJ about driving dynamics, this A8, we're told, has a multi-faceted personality that can be all things to all boardrooms. And it'll reward you in the driveway as much as it will in the drive home. Most of all, they say, it'll be a car that you're not only impressed by but one that you can also fall in love with. At the wheel of the most popular 3.0-litre TDI quattro diesel model, let's find out if they're right.

"If you're in this market, it's a car you need to try.."

If somebody had told us ten years ago that we'd be driving a two-tonne diesel-powered limo capable of accelerating from rest to sixty two mph supercar-style in just over 6s, we wouldn't have believed it. Yet that's exactly what this 250PS 3.0TDI quattro A8 can deliver - thanks to a prodigious 550Nm of torque. Even if you ignore its efficient fuel figures, this diesel variant still feels more flexible than the similarly-priced 290PS 3.0 TFSI petrol option.

A glance at the spec sheet might suggest the A8 to have lost the significant weight advantage the MK2 model used to have over its rivals, courtesy of its aluminium spaceframe underpinnings. But that's to ignore the way that this Audi is almost unique in this class with its standard fitment of quattro four-wheel drive. On any road, in almost any conditions at almost any speed, this A8 feels better the harder you drive it, solidly planted and reassuring in a way that no rival can better and few can match. Whether you'll feel the same about the standard and very undoubtedly clever 'Drive Select' electronic chassis tuning package is another question. It's this, Audi claims, that gives the car it's multi-faceted personality as the driver chooses between 'comfort', 'auto' and 'dynamic' modes, each of which alters the suspension settings and the transmission shift points.

The rest of the A8 experience is luxury personified, with everything from the headlights to the seatbelts programmable to your mood. Highlights? It's hard to pick one. Maybe the effortless ease of the silky-smooth 8-speed tiptronic automatic gearbox with its steering wheel paddles and 'Drive' or 'Sport' shift programmes. Or perhaps the supple ride delivered by the multi-link air suspension. Then there's the awesome refinement delivered by the whisper-quiet TDI engine (a slight rumble on start-up is the only diesel give-away) and the double-glazed glass. Though this isn't quite the most rewarding driver's car in its sector, all these things are factors in its status as arguably the most complete one.

Never one of the luxury saloon sector's most ostentatious players, the A8 tends to maintain a cool studied elegance in its design. This car might not quite equal the beautifully long and sleek profile of its predecessor but there's more of a sinewy tension about its lines, resulting in an imposing road presence. The sheer size of the A8 helps instil the necessary gravitas with measurements of 5,137mm for the length and close to two meters for the width. Audi's familiar single frame grille and stylish LED embellished headlamps characterise the front end.

Audi vehicle interiors rightly remain the envy of the world and the A8 just finesses the details up another couple of notches. There's a wide choice of different leathers, trim inlays in wood and metal, plus a wide range of high technology features but the basic layout conforms to Audi's usual policy of clean design and the highest quality. The rear legroom isn't huge but there's certainly enough for six-foot occupants to sit in comfort and the long-wheelbase option is available to those who really want to stretch out. A 510-litre boot should hold more than enough luggage.

The latest version of the excellent MMI control interface marshals the ancillary controls on a colour display screen that glides out from the dash. It helps the A8 do a better job than any of its rivals of keeping the dreaded button clutter to a minimum. Special mention must go to the gorgeous aeronautical gear lever than makes you feel like you're bringing a 747 in to land. There's also a touch pad on which drivers can trace letters with a finger to input destinations to the satellite-navigation system.

Pricing for the 3.0 TDI quattro is between £55,000 and £58,000, depending upon the spec that you choose, with a £4,000 premium if you want the long wheelbase bodystyle. When comparing with rivals, make sure you compare like-for-like - ie. against a Mercedes S-Class rather than an E-Class. Let's do a bit of that. The 3.0 TDI quattro A8 that most will want will cost you around the same as a comparable BMW 730d or Jaguar XJ 3.0 V6 Diesel, but save you around £3,000 on a Mercedes S350 CDI.

Whichever spec you decide upon, equipment levels shouldn't disappoint. Safety-wise, there are eight airbags, stability control of course and Audi's clever pre-sense system, which automatically activates the hazard warning lights, closes the windows and tightens the seatbelts if it thinks an accident is unavoidable. Pay more and in such a situation, it'll automatically brake the car for you if it thinks you haven't done so sufficiently, with cruise control that notices other cars indicating in other lanes and adjusts itself to suit.

There aren't many aspects of this car I can cover without talking about aluminium. Here's another. Thanks to its increased use, this A8 is as much as 200kg lighter model for model than the previous generation car. As I've said earlier on, much of that advantage is negated by the addition on most models of the heavy quattro 4WD system but even allowing for that, this car's fuel returns are still impressive, aided further by a stop-start system to save fuel in urban traffic and Audi's Recuperation system which recaptures kinetic energy to charge the battery when the car is coasting or braking. The result is 42.8mpg on the combined cycle for this 3.0 TDI Quattro model and 172g/km of CO2. If running costs are key though, there's a front-driven 204PS 3.0TDI entry-level diesel version which manages an incredible 47.1mpg on the combined cycle and just 159g/km of CO2 - virtually unheard of figures in this class.

This A8 is an impressive achievement, with this 3.0 TDI Quattro model the best all-round choice in the line-up. As it should be, this is a showcase for the Audi's best and most advanced technologies. Aluminium construction, quattro all-wheel-drive, advanced petrol and diesel engines and mind-boggling hi-tech features - they're all there and they come together with classy design and robust build quality to create a formidable motorcar.

But is it one that you can bond with, a luxury saloon you'll love as well as admire? The answer depends upon the owner of course: some may still find the A8 a little remote compared to a wood-panelled Jaguar, a status-conscious Mercedes or a proudly opulent BMW. I'm guessing though, that a significant number would find this Audi a better all-round choice. Hugely capable, innovative, beautifully built and able better than any rival to alter its dynamic character to your driving mood, this is the car that rivals always feared Audi would build. And if you're in this market, it's one you need to try.

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RATING OUT OF 10

For A8 3.0TDi
OVERALL 8.5 OUT OF 10
Performance star rating 7 out of 10 7
Comfort star rating 9 out of 10 9
Handling star rating 9 out of 10 9
Economy star rating 8 out of 10 8
Space / Versatility star rating 9 out of 10 9
Styling star rating 9 out of 10 9
Equipment star rating 9 out of 10 9
Build star rating 10 out of 10 10
Depreciation star rating 8 out of 10 8
Insurance star rating 7 out of 10 7
Value star rating 9 out of 10 9
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