1.4 TSI Twincharger 170hp (BLG)
2006–2008 · petrol · 1390cc · 170hp
Engine codes: BLG
Reliability, common problems and owner reviews for the Volkswagen Golf V 1.4 TSI Twincharger 170hp (BLG). Check this before you buy used.
The highest-output twincharger — the most stressed small petrol in the range. Same timing chain stretch risk as the 140 plus more heat and load. Strong performance, but the worst choice to buy without a full chain history.
Known Issues
Chain stretch and tensioner wear; a jumped chain bends valves. Early Mk5 tensioner design throughout.
Fix / Workaround: Proactive chain + tensioner + sprocket replacement with latest parts.
Repair cost: €500–€1100
Typically appears after: 80,000 km
170hp from 1.4L means more heat and pressure — supercharger, plumbing and internals work harder than the 140.
Fix / Workaround: Meticulous oil changes; address boost faults immediately.
Repair cost: €200–€1200
Year Cutoffs
Mileage Thresholds
After 80,000 km: Chain stretch risk rises; expect higher running costs.
Pre-Purchase Checklist
- ☐Cold-start rattle check is mandatory
- ☐Demand timing chain replacement history
- ☐Scan for boost / misfire codes
- ☐Only buy with documented chain work
Frequently asked questions
Is the Volkswagen Golf V 1.4 TSI Twincharger 170hp (BLG) reliable?
Problematic — The highest-output twincharger — the most stressed small petrol in the range. Same timing chain stretch risk as the 140 plus more heat and load. Strong performance, but the worst choice to buy without a full chain history.
What are the common problems and reviews for the Volkswagen Golf V 1.4 TSI Twincharger 170hp (BLG)?
The most commonly reported problems: Timing chain stretch / tensioner failure, High thermal / boost stress.
Is a used Volkswagen Golf V 1.4 TSI Twincharger 170hp (BLG) worth buying?
Known design issues and recurring faults that were never fully resolved. Buy only with eyes open.