Auto Express's reliability ratings are based on our Driver Power survey of over 30,000 car owners. Ratings are the average for all owners of this car who responded. Individual owners’ ratings and comments appear below.
2009-reg Petrol, Owner for 3 to 5 years

Most unreliable car I have ever owned. broke down completely on motorway and had to be towed to dealer for engine repairs. very unreliable oil guage nearly causing overfills and frequent checks with dealer. baulky gear box. stalls on full lock. restarts take ages repeatedly cycling through the ignition sequence. even the fuel filler flap jammed completely once. No particular issues but very misleading pricing of servicing from audi dealer.

Reliability: 1/5 Build Quality: 1/5
2011-reg Diesel, Owner for 1 to 3 years

Have had a couple of intermittent electrical faults, that the dealer has yet to find. there is also a flat spot with the audi 2ltr tdi engine (two cars I have owned have suffered from this), which three dealers have failed to find and fix the problem. My personal driving style limits the mpg that can be achieved with careful driving. road tax and insurance reasonable.

Reliability: 4/5 Build Quality: 5/5
09-reg Diesel, Owner for Less than a year

Very pleased overall. Excellent quality, economy and reliability so far. Comfortable on long or short journeys. I initially found the driver's seat too hard but this seems to have softened up,so it's fine now.
Occasional rear seat passengers find it difficult to get in/out - seats don't slide forward far enough.

Reliability: 5/5 Build Quality: 5/5
2010-reg Petrol, Owner for 1 to 3 years

Although reliable there are several minor issues, interactive steering wheel occasionally does not function fully, the piston rings had to be replaced to reduce oil consumption. Until piston rings were replaced under warranty oil usage was high, servicing costs reasonable so far.

Reliability: 5/5 Build Quality: 5/5
07-reg Diesel, Owner for Less than a year

Audi A5 not reliable and suspension/tyres not suitable for UK roads (tyre drone/vibrations). Also poor conversion to right hand drive with cup holders obstructing gear change, passenger volume control on wrong side of gear stick and clutch pedal far too far set to the right.

Reliability: 1/5 Build Quality: 4/5
57-reg Petrol, Owner for 1 to 3 years

Its been a fantastic car overall despite the problems that have occurred and the dealer's attitude has been excellent. I always look forward to driving it and seeing the admiring glances it draws. The real dilemma will be what to replace it with!

Reliability: 4/5 Build Quality: 5/5
2009-reg Petrol, Owner for 1 to 3 years

Reliable, but heavy on oil consumption and developed a leaking water pump after 3 years. Great economy and power when required, though turbo could do with coming in earlier when starting off in first.

Reliability: 3/5 Build Quality: 3/5
2009-reg Petrol, Owner for 1 to 3 years

Very reliable in all weather. not had a single problem in first three years. Happy with the running costs. service very good with dealer, and mpg not bad or relatively large car.

Reliability: 5/5 Build Quality: 5/5
09-reg Diesel, Owner for Less than a year

Excellent car, combining good looks with a build quality you would expect from a premium manufacturer. Would definitely purchase another one!

Reliability: 4/5 Build Quality: 5/5
2010-reg Petrol, Owner for 1 to 3 years

It has broken down once in 2 years and was faulty spark plugs. Services can be ł700-ł800 without tyres but I do approx 35k per annum.

Reliability: 4/5 Build Quality: 5/5
2010-reg Petrol, Owner for 1 to 3 years

It's been in audi a lot, for variosuissues, with oil, warning lights, clutches, flywheels. Start stop helps.

Reliability: 3/5 Build Quality: 4/5
2010-reg Petrol, Owner for less than a year

No problems experienced. Fuel economy is great for such a large car. tyres on 19" wheels are expensive.

Reliability: 5/5 Build Quality: 5/5
2009-reg Petrol, Owner for 3 to 5 years

No problems to date. Reasonable mpg and servicing costs. fuel is expensive but the same for everyone.

Reliability: 5/5 Build Quality: 5/5
2011-reg Diesel, Owner for 1 to 3 years

Noisey power steering pump is the only fault in 12k miles. Pretty good for the type of car.

Reliability: 5/5 Build Quality: 4/5
2010-reg Diesel, Owner for less than a year

No problems experienced. Mpg is lower than I would like, considering it is diesel.

Reliability: 5/5 Build Quality: 5/5
2010-reg Diesel, Owner for 1 to 3 years

No problems at all since new. Only had to add more oil, but nothing else.

Reliability: 5/5 Build Quality: 5/5
2012-reg Diesel, Owner for less than a year

No problems whatsoever. Never had to pay for oil when running an audi.

Reliability: 5/5 Build Quality: 5/5
2012-reg Petrol, Owner for less than a year

Typical german reliability. Spares pricey , mpg not as brochure.

Reliability: 5/5 Build Quality: 5/5
2010-reg Petrol, Owner for 1 to 3 years

Uses quite a lot of oil. Higher than expected oil consumption.

Reliability: 4/5 Build Quality: 4/5
2011-reg Petrol, Owner for 1 to 3 years

Oil consumption issues. Acceptable and within expectations.

Reliability: 2/5 Build Quality: 4/5
2012-reg Diesel, Owner for less than a year

No problems at all yet. Cheaper to run than previous a4.

Reliability: 5/5 Build Quality: 4/5
2010-reg Diesel, Owner for 1 to 3 years

No problems since owned. Fuel and one pair tyres.

Reliability: 5/5 Build Quality: 5/5
59-reg Diesel, Owner for Less than a year

well made,as may extras as I wanted

Reliability: 5/5 Build Quality: 5/5
2010-reg Diesel, Owner for 1 to 3 years

No problems. Expensive tyres.

Reliability: 5/5 Build Quality: 5/5
09-reg Petrol, Owner for Less than a year

Tip top. Can't be faulted!

Reliability: 5/5 Build Quality: 5/5
2008-reg Diesel, Owner for 1 to 3 years

Had no problems at all

Reliability: 5/5 Build Quality: 5/5
09-reg Petrol, Owner for Less than a year

It's brilliant.

Reliability: 5/5 Build Quality: 5/5
2009-reg Diesel, Owner for 1 to 3 years

No problems! .

Reliability: 5/5 Build Quality: 5/5