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Buyer's Guide · Audi

Are Used Audis Reliable?

Short answer: Audi builds some of the best-driving and best-feeling cars in the used market — but ownership costs are high, and the 2.0T EA888 timing chain (gen 1–2) and older 3.0T supercharged V6 have specific issues that make service history critical.

Overall Verdict
★★★★3.5/5
Audi rewards a mechanical enthusiast with records. The chassis, interior, and drivetrain are excellent; the maintenance burden is real, and a neglected Audi is one of the fastest depreciating vehicles you can buy.
Maintenance
★★★★★3.0/5
Parts availability
★★★★3.8/5
Ownership cost
★★★★★3.0/5

Buy the newest generation of the engine you can afford. Gen 3 EA888 (2013+) is a very different engine from gen 1–2. Same with S-line cars — the newer, the better.

Top Picks

Best Used Audi Models

Generations that have earned a strong long-term reputation.

A4 (B9, 2017+)
The sensible Audi
Pros
  • Gen 3 EA888 2.0T is much improved
  • Refined chassis
  • Quattro AWD
Watch for
  • Direct-injection carbon buildup at 60k+
Q5 (2018+, 2nd gen)
Right-sized luxury crossover
Pros
  • Gen 3 EA888
  • Excellent interior
  • Comfortable
Watch for
  • Air suspension option is expensive when it fails
S4 / S5 (B9, 2018+)
The tuner-tempting sport sedan
Pros
  • Turbo 3.0L V6 (EA839) replaced supercharged engine
  • Excellent AWD
Watch for
  • Check for tune history
A6 (C7 2012–2018)
The understated flagship
Pros
  • Supercharged 3.0T is refined
  • Excellent interior
Watch for
  • Supercharged V6 has specific service needs
Q7 (2017+, 2nd gen)
3-row family luxury
Pros
  • Refined V6
  • Excellent driver's SUV
Watch for
  • Air suspension expense
  • Complex electronics
TT (Mk3, 2016+)
Small coupe with soul
Pros
  • Simple, focused chassis
Watch for
  • Discontinued — parts availability planning
Do your homework

Models to Research Carefully

Not deal-breakers — but they reward a careful buyer.

A4 / A5 (B8, 2008–2016, EA888 gen 1–2)

Timing chain tensioner failure on gen 1–2 EA888 was a defining issue. Later gen 3 (2013+) revised the tensioner and is dramatically better. Verify tensioner history.

S4 / S5 (B8, 2010–2016, 3.0T Supercharged)

Supercharger snout bearing, injector, and thermostat are known service items. Excellent engine when maintained.

Q5 / Q7 with 3.0 TDI

Diesel emissions settlement affected 2009–2016 Audi diesels. Verify buyback status and any modifications.

Engines

Best Audi Engines

Powertrains that have earned a bulletproof reputation.

★★★★
EA888 gen 3 (2.0T, 2013+)
Typical lifespan: 200k+ miles

A3, A4, A5, Q5. Revised timing chain tensioner and reduced oil consumption. The safest 4-cyl Audi engine.

★★★★
3.0T Supercharged V6 (2010–2016)
Typical lifespan: 200k+ miles

S4, S5, A6, A7, Q7. Refined, powerful — has specific service needs but rewards maintenance.

★★★★
EA839 3.0T (2018+)
Typical lifespan: 200k+ miles

S4/S5 B9. Twin-scroll turbo replaced the supercharger — refined and durable.

Do your homework

Engines to Research Carefully

Not deal-breakers — but they reward a careful buyer.

EA888 gen 1–2 (2008–2012)

Timing chain tensioner failure. Serviceable but a critical repair to verify.

3.0 TDI (2009–2016)

Diesel emissions settlement. Verify buyback and any post-settlement work.

4.2L FSI V8 (RS4, S5 V8)

Carbon buildup, timing chain on early builds. Rewarding to own — expensive to own.

Inspection checklist

Common Problems

Bring this list to your pre-purchase inspection.

  • Timing chain tensioner on gen 1–2 EA888
  • Direct-injection carbon buildup (all DI Audi engines)
  • Water pump around 80k on 2.0T
  • PCV valve on 2.0T
  • Air suspension leaks on Q7 / A8
  • Electronic gremlins (MMI, sensors)
Ownership

Maintenance Costs

Audi routine maintenance is expensive at the dealer. Independent Audi/VAG specialists cut those costs and know the platforms intimately — always the smarter choice out of warranty.

The single biggest cost lever is fluid service: engine oil at 5,000 miles, DSG or ZF transmission fluid every 60k, cooling system service proactively. Skipping these is what turns Audi ownership horror stories into memes.

The Verdict

Should You Buy a Used Audi?

A used Audi can be a genuinely great car — with records. The important buying factors are:

  • Engine generation — gen 3 EA888, EA839 are safest
  • Timing chain tensioner history on older 2.0T
  • Complete service records (fluid changes, not just intervals)
  • Air suspension condition if equipped
  • Modification history — tuned Audis are much higher risk

Thinking About Buying a Used Audi?

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  • Inspection checklist
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Related Buying Guides

EA888 Generations Explained
Coming soon
S4 Buying Guide
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Q5 Buying Guide
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Audi Maintenance Guide
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