1.6 TDI 90hp (CAYB)
2009–2013 · diesel · 1598cc · 90hp
Engine codes: CAYB, CAYC
Reliability, common problems and owner reviews for the Volkswagen Golf VI 1.6 TDI 90hp (CAYB). Check this before you buy used.
The common-rail 1.6 TDI — frugal but the emissions hardware is the weak point: very common EGR valve failures and a DPF that needs regeneration every 100–200 miles, so it's a poor fit for short journeys or under ~15k miles/year. Injectors also fail expensively. Buy only as a motorway car.
Same engine, other cars
This is the same physical engine (CAYB) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
Injectors fail from ~80,000–150,000 km; when one goes the others usually follow. Cannot be reconditioned; replacements need IMA coding.
Fix / Workaround: Budget to replace all four (~€1,800–2,500); have IMA codes programmed. No formal recall.
Repair cost: €1800–€2500
Typically appears after: 80,000 km
Small engine makes proportionally more soot; EGR clogs (P0402), and it's buried by the firewall (5–6h labour).
Fix / Workaround: Clean/replace EGR; expensive due to access.
Repair cost: €300–€700
DPF blocks on short/city trips; failed regens lead to cleaning or replacement.
Fix / Workaround: Monthly 30–45 min motorway runs at speed; clean/replace if blocked.
Repair cost: €300–€1500
Water pump fails with age, risking overheating.
Fix / Workaround: Replace (often with timing belt).
Repair cost: €200–€500
EGR valve failures are extremely common on this engine → limp mode, rough running.
Fix / Workaround: Replace/clean EGR; budget for it.
Repair cost: €200–€700
Typically appears after: 100,000 km
DPF needs frequent regeneration; short/low-mileage use clogs it.
Fix / Workaround: Regular motorway runs; clean/replace.
Repair cost: €300–€1200
Typically appears after: 100,000 km
EGR clogs (P0402); DPF blocks on short trips.
Fix / Workaround: Motorway runs; clean/replace.
Repair cost: €300–€1200
Mileage Thresholds
After 120,000 km: Injector and EGR failures cluster here.
After 100,000 km: EGR/DPF/injector issues cluster.
Fault Codes to Scan
Pre-Purchase Checklist
- ☐Only buy if used mainly on motorways
- ☐Scan for injector and P0402 EGR codes
- ☐Ask about DPF regen history / forced regens
- ☐Confirm water pump / timing belt history
- ☐Buy only if you do >15k miles/yr mostly motorway
- ☐Scan for EGR (P0402) + injector codes
- ☐DPF history
- ☐Prefer petrol for city use
- ☐Buy only if motorway-used
- ☐Scan for injector + P0402
Frequently asked questions
Is the Volkswagen Golf VI 1.6 TDI 90hp (CAYB) reliable?
Problematic — The common-rail 1.6 TDI — frugal but the emissions hardware is the weak point: very common EGR valve failures and a DPF that needs regeneration every 100–200 miles, so it's a poor fit for short journeys or under ~15k miles/year. Injectors also fail expensively. Buy only as a motorway car.
What are the common problems and reviews for the Volkswagen Golf VI 1.6 TDI 90hp (CAYB)?
The most commonly reported problems: Injector failure, EGR valve/cooler failure, DPF clogging, Water pump failure, EGR valve failure, DPF clogging (short trips), EGR / DPF clogging.
Is a used Volkswagen Golf VI 1.6 TDI 90hp (CAYB) worth buying?
Known design issues and recurring faults that were never fully resolved. Buy only with eyes open.