Ignition coils (2001–2003)
usually 60,000–160,000 km · Medium risk
Signs: Misfire, flashing engine light
Fix: Replace coils (updated part)
€100–300
Engine: common problems, timing drive and oil
1.8 T 20v (EA113)
Petrol · 1,781 cm³ · 110–165 kW
18
model generations
4
known faults
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
Fuel: Petrol. Timing drive: belt · 90,000 km / every 60 mo.
In our database this engine is fitted to 18 model generations, among them: Volkswagen Golf IV, Audi A4 (B7), Volkswagen Bora, Škoda Octavia I, Volkswagen Passat B5, Audi A4 (B6) and 12 more.
The most expensive known risk is oil sludge → turbo failure: it usually appears at 120,000–220,000 km and costs €600–1,800 to fix.
Key facts
| Fuel | Petrol |
|---|---|
| Displacement | 1,781 cm³ |
| Power | 110–165 kW |
| Years | 1996–2007 |
| Timing drive | Belt · 90,000 km / every 60 mo |
| Oil | 5W-40 / 5W-30 · VW 502.00 / 504.00 · ~4.0–4.5 L · every 10,000 km |
| Engine codes | AUM, AUQ, AWP, AWU, AWV, AWT, ARY, AGU, ARZ, AJQ, APX, BAM, BKF, AMB, BEX, BFB, APU, ANB, AEB, ARK, AVJ, BVP, BVR, APP … |
Known engine faults
Faults that belong to the engine itself. They apply to every model with this engine, and each model has its own extra faults on its model page.
Oil sludge → turbo failure
usually 120,000–220,000 km · High risk
Signs: Oil light, smoke, turbo whine — worse with long oil intervals
Fix: Clean the oil pickup, synthetic oil every 10,000 km, replace turbo
€600–1,800
PCV / breather hoses cracked
usually 100,000–180,000 km · Wear part
Signs: Whistle, lean codes, oil leaks
Fix: Replace the PCV hose kit
€80–250
Water pump (plastic impeller)
usually 90,000–150,000 km · Medium risk
Signs: Overheating
Fix: Use a metal-impeller pump at the belt change
€0–150
Engine-related service
Intervals and typical prices, using the Volkswagen Golf IV as an example. The app gives the exact plan for your car.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 10,000 km or every 12 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Spark plugsIgnition | every 60,000 km or every 48 months | €50–160 |
| Timing belt kit + water pumpEngine | every 90,000 km or every 60 months | €450–900 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
Models with this engine
Model generations this engine is fitted to.
Audi A3 (8L) 1996–2003Audi A4 (B5) 1994–2001Audi A4 (B6) 2000–2004Audi A4 (B7) 2004–2008Audi A6 (C5) 1997–2004Audi TT (8N) 1998–2006SEAT Alhambra I 1996–2010SEAT Exeo 2008–2013SEAT Ibiza III 2002–2008SEAT León I 1999–2005SEAT Toledo II 1998–2004Škoda Octavia I 1996–2010Škoda Octavia Tour 2004–2010Škoda Superb I 2001–2008Volkswagen Bora 1998–2005Volkswagen Golf IV 1997–2006Volkswagen Passat B5 1996–2005Volkswagen Sharan I 1995–2010
Common questions
Does the 1.8 T 20v (EA113) engine have a timing chain or a timing belt?
Belt · 90,000 km / every 60 mo.
What oil does the 1.8 T 20v (EA113) engine take?
5W-40 / 5W-30 · VW 502.00 / 504.00 · ~4.0–4.5 L · every 10,000 km.
What are the known problems with the 1.8 T 20v (EA113) engine?
The faults with the highest risk: oil sludge → turbo failure (120,000–220,000 km, €600–1,800); ignition coils (2001–2003) (60,000–160,000 km, €100–300); water pump (plastic impeller) (90,000–150,000 km, €0–150).
Which cars have the 1.8 T 20v (EA113) engine?
Volkswagen Golf IV, Audi A4 (B7), Volkswagen Bora, Škoda Octavia I, Volkswagen Passat B5, Audi A4 (B6) and 12 more.
Sources and notes
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.
Updated 08/10/2026