Used Audi A8 review: 2010-2018 | BMW 7 Series rival tested

Audi’s A8 is the third member of the big German luxury sedan crew, sharing marketplace space with the BMW 7 Series and Mercedes-Benz S-Class. It boasts the same sharply-cut-suit looks as its peers but, in some ways, is the more technically advanced car. Somehow, however, it was never as popular as the other big Germans. Which is not to say it isn’t worth looking at now.

Code-named the 4H series in Audi-speak, the 2010 A8 was available in long- and short-wheelbase forms and with a choice of either a 3.0-litre V6 turbo-diesel with 184kW or a 4.2 litre petrol V8 with 273kW. Just for something left field, Audi also offered a 4.1-litre twin-turbo diesel V8 with 258kW but a stonking 800Nm of torque.

Read More About Audi A8

• Audi A8 2018 review
• Audi A8 4.2 TDI Sedan 2014 Review
• Audi A8 3.0 TDI 2014 review

The car was facelifted for the 2014 model year at which point the magnificent petrol V8 was dropped from the line-up and two revised turbo-diesels appeared. The first was a V6 with 190kW and the other a V8 with 283kW and now 850Nm. The latter was available only as a short-wheelbase car.

Standard equipment levels and inbuilt safety were major features of the big Audi and it remains an impressive car to drive and look at. The A8’s other big selling point was its aluminium chassis which helped offset some of the mass of the 'quattro' all-wheel drive system.

Is Audi A8 a good car?

The A8 is a lovely car to ride in and a decent thing to drive as well. It was set up with comfort in mind, but the quattro all-wheel drive system also lends an added margin of safety in terms of grip in slippery conditions.

If anything, though, it lacks the imposing visuals of the BMW 7 Series or Mercedes-Benz S-Class, and from some angles, looks like an enlarged A4 or A6. The interior is pure Audi, which is another way of saying excellent.

Because new tech – including safety gear – is usually first seen in the high-spec models from each carmaker, the A8 hit the market as a very safe car for the time. Even now, it boasts some equipment that is still optional on cheaper brand-new cars.

Audi A8 reliability

Sophisticated cars often wind up with sophisticated problems later in life. The Audi is not perfect in this regard, but it is well made and used quality materials. The fundamentals are good although, like any car, poor maintenance and servicing will show up eventually. And when repairs are needed on a high-end car like this, they won’t be cheap.

Audi A8 problems

The first thing to look for in an A8 is any evidence or history of crash damage. That’s because the aluminium chassis and body is difficult to repair properly and requires a specialist workshop to get it right. Even the factory used specialist techniques to build the cars and a lot of the bodywork and panel alignment was somewhat hand-finished. So a close check of the frame and underbody is a must.

The A8 was also caught up in the Volkswagen family’s shameful 'Dieselgate' scandal where many brands and models were fitted with devices and software designed to trick the official fuel consumption test for a better number than the car could actually achieve in the real world. The V6-powered A8s were part of this and should, by now, have been returned to Audi for a software update to negate this 'cheat'.

On 4.2-litre petrol V8 variants, some owners have reported a problem with carbon build-up on the intake valves. This is due to the direct-injection system where fuel is sprayed directly into the combustion chambers rather than across the back of the intake valve. As such, the valves don’t get washed clean and carbon can build up, affecting performance. To be perfectly fair, this is not an Audi-specific problem and can affect many engines using direct-injection.

Audi A8 recall

The A8 hasn’t had too bad a run with safety recalls, but that’s not to say there haven’t been some recalls over the years this generation A8 was on sale.

Recalls for the A8 have included problems with the glass sunroof suddenly shattering, transmission oil leaks, power steering leaks in V8 models, engine-bay seals leaking, a potential for incorrect deployment of both front airbags and seat-belt pretensioners and another to check on the oil supply to the engine’s turbochargers.

You can find the full details on these recalls by visiting: https://www.vehiclerecalls.gov.au/ .

Audi A8 years to avoid

There’s no specific year to avoid here, but the one A8 we’d be very wary of would be an ex-hotel limousine. Flash Aussie hotels often used big German sedans for this task, so take a close look at the rear seat (which will be as worn as the driver’s seat in a hotel limo) and the rear bumper which could be scratched from having a million suitcases dragged over it. The mileage is also likely to be higher than the average A8 thanks to a lifetime of slogging between the city and airport and sitting in traffic in between.

And, obviously, any big, sophisticated car like this must have a complete and up to date service history or you could be buying all sorts of trouble down the track.

Audi A8 how many kilometres

Aside from those ex-hotel limos we were talking about, the A8 doesn’t seem to rack up huge mileages. So, an example with less than 200,000km showing and a clean service history should be able to offer plenty of life for the next owner.

Audi A8 best model

Even with its all-wheel drive and aluminium structure, the A8 was hardly a sporty car in an overall sense. So why not make the most of the luxury on tap and find a long-wheelbase version which will also accommodate lanky teenagers in the back much better. And the all-wheel drive will be a great safety bonus when those same kids start learning to drive.

While the turbo-diesels have the potential to be very frugal, the Audi 4.2-litre petrol V8 remains one of the sweetest, most sonorous production V8s ever made. So that’s the one we’d go shopping for.

Audi A8 resale value

There’s a rule in the luxury car market when it comes to second-hand examples. And that’s called the Funnel Effect. Fundamentally, it suggests that while there are enough captains of industry to lease luxury cars brand-new, there aren’t enough private buyers willing to spend that sort of money for a second-hand one. And that’s when trade-in values plummet. The Audi A8 is far from immune to this.

Which means there are some great buys out there for a fraction of the cost of the walk-up price when the cars were brand-new. You’ll find decent 4H A8s out there now for $20,000 or so, and they won’t necessarily have huge mileages on board. Pony up to about $30,000 and you are in the realm of some seriously good second-hand A8s.

Audi A8 parts

Many of the A8’s driveline components are shared with other high-end Volkswagen Group makes and models, so even though the A8 itself was a fairly niche model, there’s plenty of knowledge and parts available.

The Audi brand is also popular with enthusiast motorists, too, so there’s a big online community offering support and parts supply.

You need to bear in mind, also, that the Audi is a large, heavy, relatively powerful vehicle so it will consume its fair share of tyres and brake pads and this needs to be factored into annual running costs.