The Audi A8 Independent review

Performance
The 3.2-litre V6 petrol has plenty of mid-range punch, while the 3.7 and 4.2 V8s offer even stronger performance. There's also a refined, powerful 450PS 6.0 W12 and a 4.2 V8 turbodiesel. Our favourite is the 3.0 TDI, with 230PS and 332lb ft in a smooth, refined package. In most models drive is to all four wheels through a six-speed auto 'box with the option of sequential manual shifts.

Ride & handling
All A8s ride on an air-suspension system with four settings. Body control is good for a big car, and the A8 handles tidily for its size. Speed-sensitive power steering makes the A8 easy to drive in town, but it lacks feel at higher speeds.

Refinement
All of the engines are muted in everyday driving and they issue only a subdued growl when under hard acceleration. Road noise is also kept to a low level over most surfaces, while minimal wind noise at speed is only noticeable because of the absence of any other noises.

Buying & owning
Prices undercut those of key BMW and Mercedes rivals, but the A8 isn't cheap. Residual values of around 50% after three years aren't quite up to Mercedes S-class standards; the diesels retain their value best. The petrol engines' fuel economy is poor, although the diesels are better. All attract high company car tax ratings and are expensive to insure.

Quality & reliability
The excellent build quality is one of the major attractions. Throughout the cabin there's a rock-solid feel, while materials are of excellent quality. The petrol engines are revised versions of the previous car's, so should prove reliable. It remains to be seen if the complex electronics remain trouble-free, though.

Safety & security
The A8 comes with all the safety equipment you'd expect. Anti-lock brakes with electronic distribution of stopping power and a stability control system aim to prevent accidents before they happen. Also fitted as standard are eight airbags, and front seat head restraints that automatically move to counteract whiplash in a rear impact. Security kit is comprehensive too.

Behind the wheel
A good driving position and electric adjustment for the seat and steering wheel make it easy to get comfortable up front, while the main controls and instruments are easily reached. A single knob between the front seats controls the stereo, satellite-navigation system and suspension settings, with menus viewed on a dash-top screen, but the system isn't entirely intuitive.

Space & practicality
The latest A8 has vast cabin space, especially in its long-wheelbase form. Head- and legroom for occupants is superb, and the seats are comfortable and supportive. The boot is deep, long and well shaped.

Equipment
Kit fitted as standard includes climate control, leather trim, electric seat controls, front and rear acoustic parking assist, a CD changer, alloy wheels and adaptive air suspension. Sat-nav, keyless ignition and voice controls are also standard. Sports spec adds sportier suspension and trim.