Audi A4: The Years to Avoid — and the Ones Worth Buying

The Audi A4 doesn't shout. It's the compact executive saloon for people who want a beautifully made interior, a composed motorway ride and a badge that carries weight without looking flashy. It's also become very good value used — often cheaper than an equivalent BMW 3 Series, with a cabin that has aged better.

But not every A4 is a good one. One generation in particular includes a petrol engine with a serious oil consumption problem and an automatic gearbox that has sent plenty of otherwise healthy A4s to the scrapyard. Avoid those and you can pick up a lovely used saloon or estate for sensible money.

The big one: B8 1.8 and 2.0 TFSI oil consumption (2008–2011)

The B8 A4 launched in 2008 with Audi's EA888 1.8 and 2.0 TFSI turbo petrol engines. They're strong, refined engines, but early versions had a design flaw in the piston rings that caused excessive oil consumption — in some cases more than a litre every 1,000 miles. Running low on oil also puts extra wear on the timing chain, and early EA888 engines had a separate timing chain tensioner issue that could cause the chain to jump, leading to catastrophic engine damage.

Which cars were affected: B8 A4s with the 1.8 TFSI and 2.0 TFSI built from 2008 to around 2011–2012. Audi revised the pistons and rings, and the timing chain tensioner, during production. Some affected cars had pistons replaced under warranty or goodwill.

How to identify it on a viewing: Check the dipstick before you drive. Ask the owner how often they top up the oil — once between services is normal; every few weeks is not. Look for blue smoke on start-up or hard acceleration. Ask for evidence of piston or timing chain tensioner work. A cold-start rattle lasting more than a second or two is a warning sign of chain or tensioner wear.

The safe approach: Choose a B8.5 facelift (2012–2015) petrol with revised engine parts, or an earlier car with documented piston and tensioner replacement. If in doubt, the 2.0 TDI diesel is a safer B8 choice for most buyers.

The Multitronic CVT automatic (2008–2015)

This is the A4 automatic to avoid. Front-wheel-drive A4 automatics with Multitronic use a continuously variable transmission with a chain-driven design. When it works, it's smooth. When it fails — and it fails often enough to be a real concern — repairs cost £2,000–£4,000, which on an older A4 can be more than the car's value.

Which cars were affected: Front-wheel-drive B8 A4 automatics from 2008 to 2015, with petrol and diesel engines. Quattro four-wheel-drive automatics use a different gearbox (a conventional torque converter auto on earlier cars, and S tronic dual-clutch later) and are not affected.

How to identify it on a test drive: Pull away gently from a standstill several times. Any judder, shudder or hesitation is a warning sign. Drive at low speeds in traffic and listen for whining. Watch for a flashing gear indicator on the dashboard, which signals a gearbox fault. Ask whether the gearbox fluid has been changed — Audi originally called it "lifetime fluid", but specialists recommend changing it around every 40,000 miles.

The safe approach: Buy a manual, a quattro automatic or a B9 with the S tronic gearbox. If you must buy a Multitronic, look for evidence of regular fluid changes and any previous repairs, and get a specialist inspection.

Early B8 2.0 TDI (2008–2011)

The early B8 2.0 TDI common-rail diesel (143ps and 170ps) is generally a solid engine, but some early engines have suffered problems with the oil pump drive in the balance shaft module, which can lead to sudden oil pressure loss and engine failure. Many of these engines were also affected by the Dieselgate emissions scandal and received a software update, which some owners say affected performance and DPF reliability.

How to identify it on a viewing: Look for evidence of oil pump or balance shaft work in the service history. Check the oil pressure warning light comes on and goes off correctly on start-up. Ask whether the emissions software update was done, and check for DPF or EGR warnings.

The safe approach: A 2012–2015 B8.5 2.0 TDI with full history is a better choice. The B9's EA288 2.0 TDI is better again.

The A4 to actually buy

B8.5 (2012–2015) 2.0 TDI manual or quattro — the budget pick. The 2012 facelift brought updated styling, improved engines and better reliability. A 2.0 TDI 150 or 177 in SE or S line trim is economical, comfortable and very well built. A manual or a quattro S tronic avoids the Multitronic.

B9 (2015–2019) — the sweet spot. The B9 is a big step forward in refinement, technology and quality. The 2.0 TDI 150 and 190 are excellent engines, the 2.0 TFSI petrol is much improved, and the optional Virtual Cockpit digital dashboard still looks modern. The seven-speed S tronic replaced Multitronic and is much more reliable, though it still needs fluid changes on schedule.

B9 facelift (2019 onwards) — the best A4. Updated styling, improved infotainment with a larger touchscreen, and mild hybrid technology on many engines. A 35 TDI or 40 TDI S line will sit at 70mph all day at barely 1,800rpm and still return 55mpg.

Common problems across all generations

Oil leaks: Cam cover and oil filter housing gaskets can weep. Check under the car and around the engine.

Suspension wear: A4s use a complex multi-link front suspension with many bushes and arms. Knocking over bumps or vague steering means worn components. Full front arm replacement can cost £500–£900.

MMI infotainment faults: Older MMI units can freeze or have faulty controls. Check everything works.

DPF problems on diesels: Short-trip diesels clog their filters. Look for warning lights and regeneration problems.

Water pump and thermostat leaks: Common on EA888 petrols. Check the coolant level and look for leaks.

Trim levels: SE, Sport, S line and Black Edition

SE is the comfort choice, with smaller wheels and softer suspension. Sport adds sportier seats and styling. S line has firmer, lower suspension and bigger wheels, and is the most popular trim. Black Edition adds black styling details and bigger wheels again. On bad roads, S line and Black Edition ride noticeably firmer. Many S line cars were ordered with the "SE suspension" option, which keeps the looks but softens the ride — worth checking for if comfort matters.

Look for the Technology Pack, which adds navigation and other features, and the Virtual Cockpit on B9 cars. Avant estates are as good to drive as saloons and much more practical, and often only slightly more expensive.

Viewing checklist

• Dipstick level — critical on 2008–2011 TFSI petrols
• Piston and tensioner invoices — on early EA888 engines
• Gearbox type — avoid Multitronic, or check its history carefully
• Pull-away judder — on any automatic
• Oil pressure light — comes on and goes off correctly at start-up
• Suspension knocks — over bumps and on full lock
• DPF warnings on diesels — and evidence of longer journeys
• MOT history — look for oil leak, suspension and emissions advisories

What to pay in 2026

• A4 B8.5 2.0 TDI SE manual, 2013, 90,000 miles: £5,000–£7,000
• A4 B8.5 2.0 TDI quattro S line S tronic, 2015, 80,000 miles: £7,500–£10,000
• A4 B9 2.0 TDI 150 Sport, 2017, 60,000 miles: £11,000–£14,000
• A4 B9 facelift 35 TDI S line, 2020, 40,000 miles: £17,000–£21,000
• A4 Avant B9 facelift 40 TDI quattro, 2021, 35,000 miles: £20,000–£25,000

A4 vs 3 Series vs C-Class

The three German compact executives are closer than ever, and choosing between them often comes down to priorities. The BMW 3 Series is the most engaging to drive, but has its own timing chain concerns on certain engines. The Mercedes C-Class offers the most comfortable ride and a more luxurious feel, with injector and chain issues on early diesels. The Audi A4 sits in between, with the best-built interior, a calm and refined motorway ride, and quattro four-wheel drive that suits wet British winters.

On the used market, the A4 is often the best value of the three, because it has less badge appeal among buyers chasing a sporty image. That makes a well-chosen B9 a lot of executive car for £12,000–£20,000 — as long as you avoid the Multitronic and early TFSI traps.

Is quattro worth paying for?

Audi's quattro four-wheel-drive system is one of the A4's big selling points, and on the used market it has an extra benefit: B8 quattro automatics avoid the Multitronic gearbox completely. That alone makes a quattro worth considering if you want an automatic B8.

On the road, quattro gives extra traction in wet and icy conditions and more confidence on rural roads in winter. The downsides are a weight penalty, slightly higher fuel consumption — usually 3–5mpg in real-world driving — and higher maintenance costs, as there are more components to service and wear. For drivers in towns and cities, front-wheel drive is fine most of the time. For drivers in rural areas or who tow, quattro is worth the premium.

The A4 allroad

The allroad quattro is a raised, rugged-looking version of the A4 Avant, with extra ground clearance, plastic wheelarch cladding and quattro as standard. It's a great choice if you want an estate with some light off-road ability and don't need a full SUV. The same engine and gearbox advice applies, but allroads have often been used for towing or rural driving, so check the suspension, the underside and the towbar wiring carefully.

Servicing: fixed or long-life?

Audi offers two servicing regimes: fixed (every 10,000 miles or 12 months) and long-life (variable, up to 19,000 miles or two years). Long-life servicing reduces costs, but the extended oil change intervals can contribute to the oil consumption and timing chain problems seen on early TFSI engines, and to wear on diesel engines that do short trips. Specialists generally recommend fixed servicing, especially on older cars.

When you look at a car's history, a record of fixed servicing is a good sign. If the car has been on long-life servicing, check the intervals between oil changes and consider switching to fixed servicing after you buy. A good independent Audi specialist will charge £200–£350 for a service, much less than a main dealer, and use the same parts and diagnostic equipment.

S4 and RS4: the performance A4s

The S4 and RS4 are serious performance cars, and used prices can be tempting. The B8 S4 uses a supercharged 3.0 V6 petrol, which is strong and charismatic, while the B9 S4 switched to a 3.0 V6 TDI diesel in the UK from 2019. The RS4 Avant is a genuine super-estate. All of these cars need specialist checks: brakes, tyres, suspension, gearbox and evidence of careful maintenance. A well-kept S4 or RS4 can be a fantastic car, but budget properly for running costs and avoid any car with patchy history.

Where we'd put our money

Skip any 2008–2011 TFSI petrol without piston and tensioner paperwork, and skip the Multitronic automatic on front-wheel-drive B8s altogether. On a tight budget, a B8.5 2.0 TDI manual is the one. With more to spend, a B9 2.0 TDI S tronic does everything well. And if you live somewhere the winters bite, a quattro Avant is the estate we'd have. Whichever you choose, pay an independent Audi specialist to look it over first — on a car this complex, £150 spent before you buy is the cheapest repair you'll ever make.

Also see: Used Audi A4 Buying Guide | BMW 3 Series: Years to Avoid | Best Used Audi A3 Years to Buy