Audi TT
EA888 Gen3 with 132 kW. New cylinder bore coating and integrated exhaust manifold reduce weight and warm-up time. Fewer oil consumption issues than Gen2.
Lightweight makes the difference
In the 1,305 kg TT coupé those 180 hp turn into real fun: 7 seconds to 100, precise steering and a low centre of gravity create a driving feel far beyond the numbers.
Engine Weaknesses 9
The simplex timing chain on the CJSA stretches measurably from around 80,000–100,000 km. Insufficient oil pressure at low rpm places additional strain on the chain tensioner. Cold-start rattling is an early sign; left untreated the chain can skip.
Symptoms: Metallic rattling from the engine on cold start (3–10 seconds), rough running, fault codes P0016/P0017
The bucket tappet (cam follower) of the high-pressure pump wears and leaves metal debris in the fuel system. On complete failure the debris contaminates all injectors and lines — total fuel system loss. Regular visual inspection recommended.
Symptoms: Power loss, starting problems, fuel pressure fault code P0087, knocking from the pump area
The variable oil pump on the CJSA delivers insufficient oil pressure at low rpm and in urban traffic. Camshaft phasers and chain tensioners are starved of oil — rattling, camshaft wear, and in extreme cases engine damage. A known design defect.
Symptoms: Rattling after cold start (like a sewing machine), oil pressure MIL, rough idle, camshaft phaser fault codes
Early CJSA engines (production before week 35/2015) used overly thin oil scraper rings (1.5 mm) that cooked up and burned oil. Consumption can exceed 0.5–1 L/1,000 km. Three-piece corrugated steel lamella rings were fitted from week 35/2015.
Symptoms: Oil level drops without visible leaks, bluish exhaust smoke under load, oily spark plugs
The original water pump has a plastic housing and impeller. The housing becomes brittle through thermal cycling and cracks; the impeller can detach from the shaft and cause pump failure. Recommended preventive measure: replacement at 80,000 km.
Symptoms: Coolant loss, coolant level warning, engine overheats, coolant smell
The oil separator membrane valve (part no. 06H 103 495 AK) tears and creates an intake leak. Oil mist then flows into the intake tract, causing the engine to run rich/lean and misfire irregularly. Inexpensive repair, common problem.
Symptoms: Whistling/hissing from the engine bay, rough idle, MIL with P2279/P2187, power loss
Direct injection without port injection: intake valves are not washed by fuel and become coated with EGR gases and oil mist. Noticeable power loss from reduced flow area from roughly 50,000–80,000 km. Cleaning by walnut blasting.
Symptoms: Power loss, rough idle, increased fuel consumption, misfires on cold engine
The temperature sensor in the electronic thermal management module fails. The engine no longer reaches operating temperature (90°C); oil temperature stays at around 70°C. Difficult to diagnose as no fault code is stored. Complex repair (sensor is located under the intake manifold).
Symptoms: Temperature gauge stays at 75–80°C, high fuel consumption, poor heater output
The wastegate linkage on the IHI IS20 turbocharger develops play and rattles. On early Gen3 engines the wastegate electronics (actuator) can fail from moisture ingress. Dealers often replace the complete turbocharger; the actuator can be repaired separately.
Symptoms: Metallic rattling between 1,800–2,900 rpm, inconsistent boost pressure, boost pressure fault code P0299
Vehicle Weaknesses 4
The S tronic mechatronics unit can develop faults that manifest as shift problems. Repair costs vary greatly depending on the extent of the damage.
The optional Magnetic Ride suspension produces irritating clunking noises that, according to reports, the manufacturer has yet to resolve.
The high-quality leather seats tend to produce unpleasant creaking noises. New seat frames are the solution but are usually only worth replacing under warranty.
The Virtual Cockpit is prone to software faults and failures. Wiring connections can work loose due to vehicle vibrations over time.