The Audi A3 that's the lesser risk is a manual with receipts for clutch and flywheel work, while the 7-speed dry-clutch S tronic (DQ200) is the one to avoid, as its mechatronic unit fails between 30,000 and 80,000 miles.
17 known faults, 12 rated high severity in our database; owners report 46.2 mpg, 79% of the official figure. Everything below is built from that data and the archived owner history, not from a press car.
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Check an Audi A3 advert (free) →On the 8P and 8V, a manual A3 is the lesser risk, because the S tronic automatic carries two High known faults: mechatronic failure on the 7-speed dry-clutch DQ200 from 2008 to 2019, and mechatronic or clutch pack wear on every S tronic from 2013 to 2020. Manuals don't get off lightly, as the dual-mass flywheel and clutch can let go between 40,000 and 80,000 miles on cars from 2003 to 2018.
Avoid the 2.0 TDI PD from 2004 to 2008 (BLB and BRE engines), whose oil pump drive can round off and wreck the engine, and treat any 1.4 TFSI from 2010 to 2014 or 1.8 and 2.0 TFSI from 2009 to 2015 as a timing chain risk. On those chain petrols, don't buy without hearing a cold start and seeing receipts for chain or tensioner work.
Among 8P diesels, the 1.9 TDI and 1.6 TDI aren't named by a High engine fault, so they're the lesser risk, but owners have reported several EGR valve failures on the 1.6 TDI, some soon after the emissions software update. The EA189 2.0 TDI (2008 to 2014) has a Medium fault for EGR failure and DPF blockage after that update, and the 2006 to 2009 2.0 TDI PD with piezo injectors was recalled because they cut the engine out.
The 8L (1996 to 2003) is the oldest A3, and its 1.8 20v petrol has a High fault where the cambelt snaps or the plastic water pump impeller seizes at 70,000 to 80,000 miles, wrecking the engine. Quattro and S3 models from 1996 to 2000 were recalled for corroding rear hub ball joints. The A3 launched in 2020 hasn't built up a fault record of its own, so there's nothing specific to judge it on yet.
No 8P or 8V gearbox escapes a High known fault, but a manual is the lesser risk next to any S tronic. The 7-speed dry-clutch DQ200 (2008 to 2019) suffers mechatronic unit failure between 30,000 and 80,000 miles, and every S tronic from 2013 to 2020 has a High fault for mechatronic failure or clutch pack wear between 60,000 and 100,000 miles. On the 8P, the 7-speed went with the 1.4 TFSI, 1.8 TFSI and 1.6, while the 2.0 TFSI and 2.0 TDI got a 6-speed.
Manuals have their own High faults. The dual-mass flywheel and clutch wear out early between 40,000 and 80,000 miles on manual and S tronic cars from 2003 to 2018, and 6-speed manuals from 2006 to 2007 had a planetary gear assembly fault that brings a stiff change from first to second, grinding and, at worst, a gearbox that breaks through its own casing. There was a TSB for it, so get proof it's been done. A 6-speed S tronic (DQ250) wants fluid and filter every 40,000 miles or 48 months.
The chain-driven TFSI petrols need the most care. The 1.4 TFSI (EA111, 2010 to 2014) stretches its timing chain and fails tensioners between 40,000 and 80,000 miles, and the 1.8 and 2.0 TFSI (EA888, 2009 to 2015) do the same between 45,000 and 80,000 miles, on top of burning oil through worn piston rings. The EA111 1.2 TSI and 1.4 TSI chains have no fixed replacement interval. The 3.2 VR6 has two chains that stretch and jump teeth between 80,000 and 120,000 miles.
The 1.9 TDI and 1.6 TDI are the lesser-risk diesels, since no High engine fault names either, though owners have reported EGR failures on the 1.6. Don't buy a 2004 to 2008 2.0 TDI PD (BLB or BRE): its oil pump drive rounds off between 60,000 and 100,000 miles and wrecks the engine. A 2006 to 2009 2.0 TDI with piezo injectors needs proof of the injector recall. The 1.6 TDI, EA189 2.0 TDI and EA288 diesels run a cambelt, due every 60,000 miles or 60 months.
Hear the engine start from stone cold, because a metallic rattle lasting a few seconds is the sign of a stretched chain on the 1.2 TSI, 1.4 TFSI, 1.8 TFSI, 2.0 TFSI and 3.2 VR6. Pull the dipstick too: a low level, talk of regular top-ups or blue smoke when you accelerate points to the EA888 oil burning fault, and Audi has treated a litre every 1,000 miles as normal on those engines.
On an S tronic, pull away from a standstill several times, once on a slope. A pause then a sudden surge, jerky changes, a gearbox warning or no reverse all mean mechatronic or clutch pack trouble. With a manual, listen at idle for a rattle from the gearbox and feel for judder pulling away or a heavy clutch pedal, the signs of a failing dual-mass flywheel. A stiff first-to-second change on a 2006 or 2007 6-speed manual is the planetary gear fault.
An ESP or ABS light that won't go out on a 2003 to 2008 car can be the pressure sensor buried in the ABS unit, meaning a new unit, though a loose ABS fuse has triggered it too. On a 2008 to 2014 2.0 TDI, a flashing glow plug light or limp mode points to the EGR and DPF fault. Check the air conditioning blows cold, and on a 2014 to 2019 car make sure the MMI screen rises and lowers and radio and satnav don't freeze.
Ask for the paperwork on the jobs that matter: receipts for any chain or tensioner replacement on a TFSI, cambelt changes at 60,000 miles or 60 months on the 1.6 TDI and EA189 2.0 TDI, and fluid and filter changes on a 6-speed S tronic. Get proof the piezo injector recall was done on a 2006 to 2009 2.0 TDI, that the 6-speed manual TSB work was carried out on a 2006 or 2007 car, and that the 2017 stability control software recall was done.
Paste the advert into the free check and it runs these against the listing, the MOT history and the DVLA record before you travel.
An 8L A3 with the 1.8 20v engine is only worth buying with proof the cambelt and water pump have been changed, because its High known fault is a belt that snaps, or a plastic water pump impeller that seizes and takes the belt with it, at 70,000 to 80,000 miles. The belt also drives the water pump and isn't an easy job on this transverse engine, so check the receipt names both parts.
Turbocharged 1.8 20v engines built in 2001 and 2002 had ignition coil failures, so ask whether the coils have been replaced, and Bosch airflow sensors have had a run of failures too. Quattro and S3 models from 1996 to 2000 were recalled because the ball joint at the bottom of the rear hub carrier corrodes and seizes, which can snap the lower suspension arms, so listen for noises from the rear and look for rust there.
On the S3, the self-levelling for the xenon headlights has a record of failing, and the brakes on later cars don't cool well enough for repeated hard stops such as a track day, because of bigger splashguards fitted for wet-weather braking. There was a 2003 recall for a cracking brake servo vacuum pipe that loses servo assistance, and a 2002 recall for airbags on cars with a three-spoke steering wheel, so ask for proof both were done.
The dual-mass flywheel and clutch fail between 40,000 and 80,000 miles on 8P manuals and S tronics alike: one owner's 2003 2.0 TDI needed two flywheels in a year, and another owner's 2007 2.0 TDI lost its flywheel at 46,000 miles. The 7-speed S tronic's mechatronic unit is the other gearbox fault, and one owner of a jerky 1.8 TFSI paid £866 for a new unit once Audi had covered half.
The 2.0 TDI PD from 2004 to 2008 (BLB or BRE) can lose its oil pump drive between 60,000 and 100,000 miles. On the chain petrols, owners have reported 2.0 TFSI chains failing at 45,000 and 47,000 miles and a 1.4 TFSI chain stretching at 83,000 miles, flagged by the emissions light. Owners of the 1.6 TDI and EA189 2.0 TDI have reported EGR failures, several soon after the emissions software update, with a flashing engine light and lost power.
Check the coolant expansion tank, as radiator leaks have shown up after 18 months and can take out the head gasket. The ESP and ABS light on 2003 to 2008 cars can mean a new ABS unit, and the air conditioning compressor can fail between 50,000 and 90,000 miles. On the Cabriolet, the fabric roof starts to fail at the folds and the rear side windows don't always close, and on a Sportback with the Open Sky roof, look for water getting in at the sun visor mountings.
Real-world economy on this generation: Audi A3 Sportback 44.9 mpg, Audi A3 43.8 mpg, Audi A3 Cabriolet 43.1 mpg, Audi A3 48.0 mpg, Audi A3 Sportback 47.9 mpg.
The 8V's weak point is the S tronic: every one from 2013 to 2020 carries a High fault for mechatronic failure or clutch pack wear between 60,000 and 100,000 miles, and owners have reported DQ200 failures at 18,000, 34,125 and 62,500 miles. One owner of a 2013 1.4 TSI was quoted £7,000 to replace the gearbox, and another paid £2,400 for new mechatronics before the dealer found the clutch pack was at fault.
Owners have reported early clutch failures too, including a 2014 1.4 TFSI that needed two in a few months, at 22,301 and 23,146 miles, and the flywheel and clutch fault covers cars up to 2018. The EA888 1.8 and 2.0 TFSI chain fault runs to 2015 and its oil burning to 2017, and owners of the 1.4 TSI have reported heavy oil use, one a litre in 600 miles. The 1.4 TFSI chain fault covers cars up to 2014, so listen to an early 8V from cold.
It's a five-star Euro NCAP car, though the ride's hard on sports suspension with large wheels. The MMI system on 2014 to 2019 cars has a Medium known fault between 30,000 and 60,000 miles, with the screen rising and dropping by itself, DAB reception cutting out and the satnav freezing. One owner was quoted £2,500 for a replacement module, so work every function before you hand over any money.
Real-world economy on this generation: Audi A3 48.0 mpg, Audi A3 Sportback 47.9 mpg, Audi A3 Saloon 47.6 mpg, Audi A3 Cabriolet 44.2 mpg, Audi A3 46.1 mpg, Audi A3 Saloon 47.7 mpg.
Sellers rarely admit these faults outright
Paste any Audi A3 advert and we check it against the faults, the MOT record and these figures in seconds.
Check an advert now (free) →Owners report 46.2 mpg across the Audi A3 engines with data, about 79% of the official figure, from 2,898 submissions.
Audi A3 Real MPG by engine →There's more room in the Sportback, which gives rear passengers extra space and has a bigger boot than the three-door A3, so it's the practical one to live with. The Cabriolet's a proper four-seater with a neat cloth roof, a boot that's decent for a convertible and rear seats that fold down when you need to carry more.
Inside the A3 from 2020, the cabin's finished in premium materials and feels a cut above. On the 8P hatchback and Sportback, the rear seats split and fold, so you can carry a long load and still take a passenger in the back. The 8V came with a wide choice of engines, so there's plenty to pick from whatever sort of driving you do.
The Audi A3 that's the lesser risk is a manual with receipts for clutch and flywheel work, while the 7-speed dry-clutch S tronic (DQ200) is the one to avoid, as its mechatronic unit fails between 30,000 and 80,000 miles. Our database holds 17 known Audi A3 faults, 12 rated high severity, and the sections above say which generation and engine carry them.
On the 8P and 8V, a manual A3 is the lesser risk, because the S tronic automatic carries two High known faults: mechatronic failure on the 7-speed dry-clutch DQ200 from 2008 to 2019, and mechatronic or clutch pack wear on every S tronic from 2013 to 2020. On the fault record the 8L (1996 to 2003) carries 2 known faults against 11 on the 8P (2003 to 2012). Each generation's section above gives the detail. Audi A3 faults by generation.
Hear the engine start from stone cold, because a metallic rattle lasting a few seconds is the sign of a stretched chain on the 1.2 TSI, 1.4 TFSI, 1.8 TFSI, 2.0 TFSI and 3.2 VR6. Read the MOT history for repeat advisories and ask for invoices for any work the seller mentions. Then paste the advert into the free check, which reads it against every known Audi A3 fault before you travel.
Owners report 46.2 mpg on average, about 79% of the official figure, from 2,898 submissions. Belt (1.6 TDI, EA189, EA288): 60,000 miles or 5 years, whichever comes first, so budget for it if the history does not show it done. The known faults page lists a rough repair cost against each fault. Audi A3 Real MPG by engine.
If you used the Honest John car-by-car reviews before the site closed in 2026, this is where the Audi A3 buying advice now lives. It is written from the archived owner reports and model notes (archived page, 243 items read for this model), our own known-faults database, the confirmed service intervals and the Real MPG figures. Every number on the page comes from that data, not from the text. The same data feeds our free advert check.
CarAdCheck is not affiliated with Honest John or Volkswagen Financial Services. What happened to Honest John, and where each feature lives now.
The Audi A3 is one decision. Reading the advert, the history and the seller are the rest, and these cover them.
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