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Audi TT 1.8 TFSI common faults.

2010–2014, coupé, petrol, 160 HP.

The fault list covers: CDAA engine, DQ200 transmission.

What you save stays on this device only. My saves

5 fault write-ups. 3 important. No recall on the list.

If you know the year, pick it. Faults for other years drop out of the list.

Before you buy

Known faults

3 important faults

critical1

2.0 / 1.8 TSI (EA888 gen1 to gen2): the timing chain tensioner lets go

critical

With the 2008 EA888 VW switched from a belt to a chain, and the tensioner of the first two generations turned out weak: as the ratchet mechanism ages it does not hold its position when the engine stops and the oil pressure disappears. The oil drains overnight and the chain goes slack. The symptom looks harmless for a long time (a short, few second rattle on a cold start as the chain slaps the guide rail), and then one day it jumps, and the engine is badly damaged inside. From then on the repair is a cylinder head or an engine rebuild. Around 2012 the maker was already fitting an improved tensioner; on the old one only replacement helps, not monitoring the noise.

What to check

  • Start it cold. That is the only moment it is audible: a 1 to 3 second metallic rattle
  • Ask whether the chain tensioner was replaced, and ask for the invoice (the part number is the point)
  • If the seller says it only rattles a little when cold, that is not reassuring but the fault itself
2 more steps in the write-up

expensive2

DQ200 (7 speed dry DSG): mechatronics

expensive

A thin wall of the mechatronics valve body can crack, which causes a loss of pressure. The typical signs: jerking and harsh shifting from 1st to 2nd at low speed, a flashing PRNDS display, then a gear engagement fault, intermittently at first.

What to check

  • Pull away slowly from standstill and watch the 1 to 2 shift: does it jerk, is it harsh
  • Check whether the PRNDS display flashes or the dash reports a gearbox fault
  • In creep mode (brake released), does the car move off evenly
1 more steps in the write-up

Magnetic Ride: leaking adaptive damper

expensive

Magnetic Ride is an adaptive damper you order separately, the damper uses a magnetic fluid, which is what lets it go firmer or softer, and if it leaks the system reports a fault. Even one damper costs more than 1,000 euros, and they are usually replaced per axle, so as a pair. First check whether the car has it at all, because it was an option and a listing rarely says, and if it does, ask whether any have already been replaced.

What to check

  • Ask first whether the car has Magnetic Ride: it was an option
  • Switch between the driving modes and feel whether the ride actually changes
  • Shine a light on the dampers: an oily streak on the body means a leak
2 more steps in the write-up

cheap repair2

1.8 and 2.0 TSI (EA888): the crankcase breather membrane tears and lets false air in

cheap repair

The crankcase breather carries the vapour that forms inside the engine back to the intake, and a rubber membrane regulates the pressure. Oil and heat harden this membrane until it tears, and from then on the intake draws air through the hole in it. The engine control unit does not measure that air, so the mixture goes wrong: the engine shakes at idle, stumbles when accelerating, and the fault memory gets P2279 for an intake system leak. In the other direction oil starts towards the intake, which leaves an oily film in the intercooler and on the intake pipe and speeds up the carbon build-up on the intake valves. The audible sign is a whistling or hissing noise from the engine bay, loudest at idle. The tear is reported between 60,000 and 90,000 km. On the first and second generation the breather is a separately replaceable valve (factory number 06H 103 495 AK) and costs between 80 and 400 euro; from the third generation it is built into the cam cover, so there the cover is replaced. The maker issued three versions up to 2016, and fitting the pressure variant that does not belong to the engine brings the same symptom back.

between 60,000 and 90,000 km80–400 EUR

What to check

  • At idle listen for a whistling or hissing noise from the engine bay
  • Read the fault memory and look for the P2279 code for an intake system leak
  • Take the air filter housing lid off and see whether there is an oily film on the filter and in the housing
2 more steps in the write-up

DSG selector lever: failure of the P position switch

cheap repair

The dash shows "Error: Workshop! Only leave vehicle in position P" with an audible warning. The message appears in whatever language the car is set to, for example "Fehler: Werkstatt! Fahrzeug nur in Stellung P verlassen" in German.

Show the rest

The message points at the gearbox, but the fault is not there. A tiny switch sits in the module under the selector lever and signals that the lever is in park (P). Its contact wears and can also burn. That makes the signal unreliable, and the car warns you. The fault codes appear as 617752, P173400 or B116229.

At first it is intermittent. Sometimes the message comes up, sometimes not, so a short test drive easily misses it. Later it becomes permanent, and the gearbox can drop into limp mode.

This fault looks more expensive than it is. The maker released a separate retrofit switch kit for it (5Q0713128A for the black module, 3Q0713128 for the white one), which can be fitted in half an hour. The kit costs 70 to 100 pounds. At a franchised dealer, however, the whole selector lever module sometimes gets replaced, which costs 626 to 1,000 pounds there. So the difference between the two routes is roughly tenfold.

The affected group is post 2013 MQB platform Volkswagen, Audi, Seat and Skoda cars with a DSG gearbox. The switch is in these gearboxes, because that is what these cars have in common. The part itself is not part of the gearbox but of the module under the lever.

What to check

  • Watch the dash after starting: the message is intermittent and can be missed on a short loop
  • Move the lever from P to D and back several times, then get out and lock the car
  • Ask whether the selector lever switch has been replaced already, and ask for the invoice
2 more steps in the write-up

Checklist

Audi TT 1.8 TFSI

First what you would check on any car. Then the faults of this model.

Before you buy

Checklist

The printed sheet starts with what you would check on any car. What you tick stays on this device only.

On every car

Ask the owner

Faults of this model

vinkodex.com · Before you buy it, see what can go wrong.

Engine and transmission

CDAA · 1.8 TFSI

118 kW (160 HP) · petrol

DQ200 · 7-speed DSG, dry clutch

DSG · 7 speed

Clutchdry
Torque limit250 Nm
MakerVolkswagen

We built the code from the model and the gear count. The factory sheet does not state it.

Variant data

What is in this version

Factory data

Trim
—
Body
coupé
Fuel
petrol
Transmission
automatic
Engine size
1798 cc
Power
118 kW (160 HP)
Drive
FWD
Production
2010–2014

Factory service interval

The manufacturer specifies this for this version. Of the mileage and the time, the one that comes first is the one that counts.

  • Air filter

    • 60,000 km or 4 years

  • DQ200: lifetime fill by the maker, not in practice

    • lifetime fill: the maker does NOT specify a change

  • Cabin (pollen) filter

    • 30,000 km or 2 years

  • Engine oil and oil filter

    • LongLife30,000 km or 2 years(valid only with LongLife-approved oil)
    • 15,000 km or 1 year

  • Brake fluid change

    • first: 3 years, then 2 years(first change at 3 years, then every two years)

  • Coolant (antifreeze) change

    • first: 193,000 km or 10 years, then 97,000 km or 5 years(G13 / G12++: first change at 120,000 miles or 10 years, then every 60,000 miles or 5 years)

  • Spark plugs, petrol

    • 60,000 km or 6 years
All 8J versions

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms