IsItAGoodCar

Common Problems with the
2009–2011 Audi A5 Mk1 (8T/8F)

We've identified 6 known issues that can affect the 2009–2011 Audi A5 Mk1 (8T/8F). 4 of these are serious faults that could be expensive to repair.

6
Known Issues
4
Serious
2
Moderate
0
Minor

The 2009–2011 period has 5 more issues than the Audi A5 Mk1 (8T/8F) average across all year periods.

All Known Issues

Excessive Oil Consumption (EA888 Gen 2)

SeriousEngine

Early EA888 2.0 TFSI engines (2008-2012) can consume oil heavily because of piston-ring wear. A proper fix requires updated pistons and connecting rods (Stage 2 fix).

Most affected: 1.8 TFSI, 2.0 TFSI

Estimated cost: £3,000–£5,000Affects: 2008–2012Often appears around: 40k-100k miles

Typical symptoms

  • •Frequent oil top-ups between services
  • •Blue smoke after overrun or idle
  • •Catalyst or engine-management warnings on neglected cars

What to inspect before you buy

  • ✓Ask exactly how much oil it uses per 1,000 miles
  • ✓Demand invoices for "Stage 2" piston and ring work
  • ✓Check the tailpipes and boot for spare oil bottles

Timing Chain Tensioner Failure

SeriousEngine

Early petrol cars can suffer timing-chain tensioner failure, often announced by cold-start rattle before the chain slips and causes major engine damage.

Most affected: 1.8 TFSI, 2.0 TFSI

Estimated cost: £900–£1,800Affects: 2008–2012Often appears around: 50k-100k miles

Typical symptoms

  • •Rattle for a few seconds on cold start
  • •Timing correlation faults
  • •Harsh idle or sudden non-start if the chain jumps

What to inspect before you buy

  • ✓Insist on a genuine stone-cold start
  • ✓Look for upgraded tensioner or full chain-kit invoices
  • ✓Walk away from sellers who dismiss chain noise as normal direct-injection chatter

Multitronic CVT Failure

SeriousGearbox & Transmission

Front-wheel-drive automatic cars use the Multitronic CVT, which can judder, flare, or lose drive if fluid changes were skipped or the gearbox ECU starts to fail.

Most affected: FWD 1.8 TFSI Multitronic, FWD 2.0 TFSI Multitronic, FWD 2.0 TDI Multitronic

Estimated cost: £1,000–£2,500Affects: 2007–2014Often appears around: 60k-120k miles

Typical symptoms

  • •Rev flare under gentle acceleration
  • •Judder pulling away
  • •Flashing PRNDS or gearbox warning

What to inspect before you buy

  • ✓Drive the car from cold and when fully warm in stop-start traffic
  • ✓Ask for fluid-service invoices at the correct intervals
  • ✓Prefer manuals or well-documented quattro S tronic cars if the history is patchy

S tronic (DL501) Mechatronic Failure

SeriousGearbox & Transmission

The 7-speed wet-clutch S tronic on quattro models can suffer mechatronic unit and clutch pack wear, especially if fluid changes were skipped.

Most affected: quattro 2.0 TFSI S tronic, quattro 3.0 TDI S tronic

Estimated cost: £1,000–£2,500Affects: 2007–2016Often appears around: 60k-120k miles

Typical symptoms

  • •Jerky pull-away
  • •Hesitation selecting reverse
  • •Gearbox malfunction warning

What to inspect before you buy

  • ✓Drive in slow traffic for smoothness
  • ✓Check for DSG fluid change invoices every 38k miles
  • ✓Look for jerky shifts when cold

DPF Clogging on Diesels

ModerateExhaust & Emissions

Town-driven diesel A5s block their DPFs, triggering limp mode and expensive forced regenerations or replacement.

Most affected: 2.0 TDI, 3.0 TDI

Estimated cost: £250–£1,500Affects: 2007–2016Often appears around: 60k-120k miles

Typical symptoms

  • •DPF warning light
  • •Limp mode
  • •Reduced fuel economy and power

What to inspect before you buy

  • ✓Ask about driving patterns and motorway use
  • ✓Check for DPF-related fault codes
  • ✓Verify EGR system history

Cabriolet Roof Mechanism Faults

ModerateBodywork & Rust

The A5 Cabriolet soft-top roof can get stuck mid-operation, with bowden cables stretching, motors wearing, and microswitches failing.

Most affected: A5 Cabriolet (8F)

Estimated cost: £300–£1,500Affects: 2009–2016Often appears around: 50k-100k miles

Typical symptoms

  • •Roof stuck open or partially open
  • •Soft top cannot be used message
  • •Slow or juddering roof operation

What to inspect before you buy

  • ✓Operate the roof fully at least twice
  • ✓Listen for straining motor sounds
  • ✓Check for water leaks in the boot area

Buying Tips for the 2009 Audi A5 Mk1 (8T/8F)

  • ✓Pre-2012 2.0 TFSI cars need proof of piston-ring work or genuinely modest oil use - anything vague is a red flag
  • ✓FWD automatics need excellent Multitronic servicing, while quattro S tronic cars should feel clean and decisive from cold and warm
  • ✓Check the frameless windows seal and drop correctly and inspect the boot for dampness on Sportback and Cabriolet models
  • ✓If it is a diesel, ask about DPF and EGR history because town-driven 2.0 TDI cars can become false economy
2008 Audi A5 Mk1 (8T/8F)2012 Audi A5 Mk1 (8T/8F)

Browse 2009–2011 Audi A5 Mk1 (8T/8F) in our Directory

View MOT history, registration data, and reliability scores for 2009–2011 Audi A5 Mk1 (8T/8F) vehicles.

View 2009–2011 Directory

Other Audi A5 Mk1 (8T/8F) Year Periods

200720082009–201120122013–20142015–2016

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