Audi A6 saloon
Price £31,955 - £56,000
- Efficient engines
- Good-quality interior
- Hi-tech standard kit
- Not as much fun to drive as a BMW
- Firm suspension on S line models
- Expensive optional extras
At a glance
"The Audi A6 is the brand's answer to the BMW 5 Series – and this version is the best yet."
The Audi A6 is an executive saloon car with excellent build quality and a huge range of engines that now includes the super-economical Ultra model. Rivals for the A6 include the BMW 5 Series, Jaguar XF and Mercedes E-Class.
If you want an executive car that's fun to drive, you may prefer the Jaguar XF or BMW 5 Series, but the fast Audi S6 can still get from 0-62mph in just 4.6 seconds. Buyers can also fit their A6 with the brand's renowned quattro four-wheel-drive system for excellent grip in tricky road conditions.
There's a huge range of models to choose from in the Audi A6 range, all of which are reasonably well equipped. Even the basic SE model includes cruise control, sat nav, climate control, a leather interior and a powerful stereo.
MPG, running costs & CO2
Incredible 2.0-litre TDI diesel Ultra model returns nearly 65mpg
The extremely efficient 2.0-litre diesel is our pick of the Audi A6 saloon engine range. It can return fuel economy of nearly 65mpg and its CO2 emissions of 114g/km mean road tax costs just £30 a year. That’s very impressive for a large and heavy saloon car. The 3.0-litre diesel offers more performance, but is still good for 53.3mpg if you go for the 210bhp engine or 47.9mpg from the 242bhp version. Those cars cost £130 and £180 a year to tax, respectively.
Apart from the performance-orientated S6 (which can only return fuel economy of 29.4mpg), the only petrol engine available is in the A6 Hybrid, which sees decent economy but is very expensive to buy.
How much your A6 will cost to service depends on the model. Cars fitted with 2.0-litre engines are charged £159 for a basic service or £309 for a major one. Larger-engined models pay £189 and £375 respectively. Insurance runs from group 27 for the 2.0-litre diesel to group 43 for the sporty S6.
Engines, drive & performance
Punchy performance from all engines across the range
Audi has used aluminium to build the Audi A6 in order to keep the car’s weight down, and it feels agile as a result, even if it can’t match the BMW 5 Series and Jaguar XF for driving thrills. Treat the A6 as a comfortable cruiser and it makes lots of sense.
The best version to go for is the Ultra diesel, which, despite being one of the entry-level models, can get from 0-62mph in a shade over eight seconds. The Ultra’s smaller wheels (compared to S Line models) and relaxing suspension make it extremely comfortable and it comes as standard with Audi’s smooth-shifting seven-speed automatic gearbox.
There are plenty of engine options to go for if you want more performance. The 3.0-litre supercharged petrol engine in the S6 saloon takes the car from 0-62mph in just 4.6 seconds, while the faster version of the 3.0-litre diesel is much more economical and can get from 0-62mph in 6.2 seconds.
Interior & comfort
Long motorway journeys are a breeze if you specify the standard suspension
The interior of the Audi A6 is one of its best features. It feels better-built than all of its rivals, thanks to plenty of soft-touch plastics and plush interior finishes. The controls are laid out logically and many of the car’s functions are operated via Audi’s intuitive MMI control system.
Full adjustment for both the steering wheel and driver’s seat makes it easy to find a comfortable driving position and all models come with front and rear parking sensors.
Even if you go for the basic diesel SE model, the Audi’s interior is well insulated from engine, road and wind noise. Sporty S line models don’t offer the same comfort because of their larger alloy wheels and stiffer suspension, which transfer more of the bumps in the road into the cabin than the setup on SE models.
Practicality & boot space
Bigger boot than a BMW 5 Series and plenty of interior storage
Front-seat passengers in the Audi A6 are unlikely to feel short-changed, as there's plenty of head and legroom. Large windows mean that the Audi feels airier inside than some of its rivals. There’s also plenty of head, leg and shoulder room in the back.
Boot space is good, too – the Audi’s 530-litre capacity beats the BMW 5 Series and is only slightly behind what you get in the Mercedes E-Class. Drop the rear seats down and boot space grows to 995 litres. As with any saloon, the Audi A6 suffers from a small boot opening and quite a high lip, but if you want a more practical luggage carrier you’d be better off going for the Audi A6 Avant estate.
As many A6s are used as regular family transport, there are plenty of smaller cubbyholes dotted around the interior, including a lidded storage area between the two front seats, cup-holders, door bins and a decent-sized glove box.
Reliability & safety
Very reliable and extremely safe
Audis are quite expensive, but they have an excellent record for reliability and the A6 finished 26th out of 150 cars in our Driver Power owner satisfaction survey, climbing one place from its 2013 showing. Owners rated the A6 highly for reliability, build quality, performance and standard equipment.
You'd expect the A6 to be safe and the car comes with six airbags, seatbelt warning buzzers, tyre-pressure monitors and electronic stability control. That safety kit helped it score the maximum five stars when it was crash-tested by Euro NCAP. Buyers can improve safety with optional extras such as the company’s technology package. At £3,250, it's pricey, but it includes active cruise control – which can keep a safe distance back from the car in front – a blind-spot warning system and active lane-keeping assistance.
Price, value for money & options
Add optional extras and the list price will soon spiral
The SE model is the most basic version of the Audi A6, but it comes with a huge amount of standard equipment, including 17-inch alloy wheels, dual-zone climate control, a powerful stereo, a DAB digital radio, sat nav and Audi’s Drive Select system, which allows you to set the car up for performance or comfort.
S line models add electrically adjustable lumber support for their upgraded sports seats, a three-spoke steering wheel, 18-inch alloy wheels and a sporty bodykit. The car also has sports suspension, but customers can revert to the more comfortable SE setup at no extra cost. Aside from the S6, the Black Edition models have the most striking looks of all thanks to their 20-inch alloy wheels and a de-chromed exterior.
There are loads of extras to choose from, some of which are very expensive. They include a Bang and Olufsen stereo (£6,300), a panoramic sunroof (£1,225) and full LED headlights (£2,500). The Ultra diesel has the strongest second-hand values: you can expect it to hold on to 46% of its original price over three years or 36,000 miles, compared to the 49% of an equivalent BMW 5 Series.