Diesel · 2004–2011
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
All about the Audi A6 (C6)All about the 2.0 TDI PD (EA188, 8v / 16v) engine
The 2.0 TDI PD (EA188, 8v / 16v) engine was fitted to the Audi A6 (C6) (2004–2011). In the EU that is 20.2 % of all new cars of this generation.
Versions: 2.0.
The most expensive known risk is unit injector faults (solenoid coil; Siemens piezo versions): it usually appears at 150,000–280,000 km and costs €300–2,000 to fix.
✓ The faults of this engine were checked against sources (10/2026). Each item has at least two independent sources or an official recall or parts-maker technical note.
Signs: Sudden oil pressure warning, often at high rpm, sometimes noise from the sump; turbo or whole engine can be destroyed
Fix: Stop the engine at once if the oil light comes on; on high-mileage cars inspect the hex shaft with the sump off and fit the revised balance shaft module or a repaired shaft
Signs: Slowly falling coolant level, hard swollen coolant hoses, white smoke after a cold start, overheating
Fix: Pressure-test the cooling system and check for exhaust gas in the coolant; replace the cylinder head with a later revision
Signs: Ticking or uneven running especially at idle, loss of power, metal particles in the oil
Fix: Inspect the cam lobes under the valve cover; replace camshaft, lifters and bearing shells as a set; always use oil to VW 505.01 (507.00 with DPF)
Signs: Misfire on one cylinder, rough running, smoke, loss of power, hard starting
Fix: Check injector coil resistance and the loom first; recondition or replace the faulty injector with new seals and bolt
Signs: Uneven power, limp mode under load, overboost / underboost codes
Fix: Compare set and actual boost in live data; check the actuator and vacuum; clean the vanes or recondition the turbo
Signs: Loss of power, black smoke, EGR fault codes, limp mode
Fix: Check EGR function in live data; clean or replace the valve, and check the cooler
Signs: Intermittent misfire codes on single cylinders, rough running that comes and goes
Fix: Wiggle-test the loom and connectors with a continuity check; replace the injector loom
Signs: Knocking, vague steering, uneven tyre wear
Fix: Replace the arm kit (8 arms)
Signs: Missing pixels in the display
Fix: Repair the cluster
Signs: Slipping, high bite point
Fix: Replace clutch kit
Signs: Rattle at idle, vibration pulling away
Fix: Replace with clutch
Signs: Delayed or harsh shifts
Fix: Fluid service, repair
Signs: Judder pulling away, jerks, 'gearbox fault' limp mode
Fix: Fluid every 60,000 km; repair or exchange
Typical routine maintenance cost for 100,000 km: €2,850–6,350. Sum of the services and wear parts in the plan above (about 15,000 km a year, independent workshop), without faults.
Intervals and typical prices for the Audi A6 (C6) with the 2.0 TDI PD (EA188, 8v / 16v) engine. The app gives the exact plan for your mileage.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Cabin (pollen) filterClimate | every 15,000 km or every 12 months | €15–40 |
| Brake fluidBrakes | every 24 months | €50–95 |
| A/C service (regas + desiccant)Climate | every 24 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Fuel filterFuel | every 30,000 km or every 24 months | €40–110 |
| Glow plugsEngine | every 100,000 km | €120–300 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Timing belt kit + water pumpEngine | every 120,000 km or every 60 months | €450–900 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Manual gearbox oilTransmission | every 150,000 km | €60–130 |
| Front brake padsBrakes | usually at 30,000–60,000 km | €60–150 |
| Front brake discs + padsBrakes | usually at 60,000–120,000 km | €150–320 |
| Rear brake padsBrakes | usually at 50,000–90,000 km | €50–130 |
| Tyres (set of 4)Wheels | usually at 40,000–60,000 km | €320–700 |
| Wiper bladesBody | checked at service | €20–50 |
| 12V batteryElectrical | checked at service | €100–220 |
| Version | Share | Years | CO₂ | Fuel use |
|---|---|---|---|---|
| 2.0 Diesel1,968 cm³ | 40.3 % | 2010–2010 | — | — |
Source: European Environment Agency (EEA), monitoring of CO₂ emissions from new passenger cars, CC BY 4.0. CO₂ and fuel use are official type-approval values (WLTP from 2021), not real-world consumption.
Recalls the manufacturer published in the United Kingdom for this model (8). The same recalls usually apply across Europe. Ask an authorised dealer to check by VIN whether your car is affected and whether the work has been done.
The faults with the highest risk: unit injector faults (solenoid coil; Siemens piezo versions) (150,000–280,000 km, €300–2,000); camshaft, injector rockers and hydraulic lifters wear (120,000–250,000 km, €600–1,300); turbo vanes (VNT) sticking from soot (120,000–250,000 km, €200–1,200); front multi-link control arms (80,000–160,000 km, €300–700).
Belt · 120,000 km / every 60 mo.
5W-30 · VW 507.00 / 505.01 · ~4.3 L · every 15,000 km.
2.7 / 3.0 TDI V61.2 / 1.6 / 2.0 TDI CR (EA189)2.0 FSI / TFSI (EA113)1.8 / 2.0 TSI / TFSI (EA888)
Audi A3 (8P) 2003–2012Škoda Superb II 2008–2015Volkswagen Touran I 2003–2015Volkswagen Passat CC / CC 2008–2016
Main sources for the faults of this engine:
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Engine versions: EEA, monitoring of CO₂ emissions from new passenger cars (CC BY 4.0, DG CLIMA). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles. How we check the data →
Updated 29/10/2026