1.4 TFSI 125hp (CAXC)
2007–2012 · petrol · 1390cc · 125hp
Engine codes: CAXC
Reliability, common problems and owner reviews for the Audi A3 1.4 TFSI 125hp (CAXC). Check this before you buy used.
The 1.4 TSI (CAXC, EA111) is the small turbo petrol — economical and adequate, but working hard in a car as big as the Superb. It's the EA111 generation, so the key checks are timing-chain tensioner condition (early tensioners could let the chain jump) and oil consumption/PCV. Belt? No — chain. A documented car with the revised tensioner and clean oil is fine; an unknown-history one carries the EA111 chain risk. Underpowered for the body when loaded.
Same engine, other cars
This is the same physical engine (CAXC) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
EA111 chain can skip if the tensioner fails → valve damage. Cold-start rattle warns.
Fix / Workaround: Fit revised chain + tensioner; gentle cold starts.
Repair cost: €600–€1400
Typically appears after: 100,000 km
DI carbon build-up.
Fix / Workaround: Walnut blast.
Repair cost: €150–€350
Typically appears after: 120,000 km
Early tensioner can fail → chain jump → valve damage.
Fix / Workaround: Confirm revised tensioner; replace chain kit proactively.
Repair cost: €500–€2000
Typically appears after: 100,000 km
Some EA111 TSI use oil; PCV faults.
Fix / Workaround: Monitor oil; replace PCV.
Repair cost: €100–€600
Typically appears after: 110,000 km
Year Cutoffs
Mileage Thresholds
After 100,000 km: Chain/carbon risk rises.
Pre-Purchase Checklist
- ☐Cold-start rattle check
- ☐Chain/tensioner history
- ☐Intake decarbonising history
- ☐Check DSG7 if fitted
- ☐Chain rattle / revised tensioner
- ☐Oil-consumption history
- ☐Brisker than the 1.6
- ☐Chain rattle / revised tensioner check
- ☐Underpowered loaded
Frequently asked questions
Is the Audi A3 1.4 TFSI 125hp (CAXC) reliable?
Problematic — The 1.4 TSI (CAXC, EA111) is the small turbo petrol — economical and adequate, but working hard in a car as big as the Superb. It's the EA111 generation, so the key checks are timing-chain tensioner condition (early tensioners could let the chain jump) and oil consumption/PCV. Belt? No — chain. A documented car with the revised tensioner and clean oil is fine; an unknown-history one carries the EA111 chain risk. Underpowered for the body when loaded.
What are the common problems and reviews for the Audi A3 1.4 TFSI 125hp (CAXC)?
The most commonly reported problems: Timing chain stretch / tensioner, Intake valve carbon, Timing-chain tensioner (EA111), Oil consumption / PCV.
Is a used Audi A3 1.4 TFSI 125hp (CAXC) worth buying?
Known design issues and recurring faults that were never fully resolved. Buy only with eyes open.