Where condition and history are comparable, the earlier chain-driven 1.7 diesel Optima remains the technician's preference over this wet-belt facelift.
- Fuel Type
- Diesel
- Timing System
- Wet timing belt
Buying Advice
The later facelift Optima fitted with the 1.6 wet-belt diesel is not considered as reliable as the earlier chain-driven 1.7 diesel.
What to Check Before Buying
- Confirm the exact engine fitted before purchasing.
- Check the service history for missed or late maintenance.
- Ensure the correct oil specification has been used.
- Ask whether the wet belt has been inspected or replaced.
- Obtain documentary evidence for any previous belt replacement.
Final Verdict
Where condition and history are comparable, the technician's preference is the earlier chain-driven 1.7 diesel. The later 1.6 wet-belt model requires more caution and stronger maintenance evidence.

Alfie has over 11 years of experience in the motor trade and founded Alfa Prestige to give buyers the insider knowledge that was previously only available to professionals.



