A technician's honest verdict on the A20DTH-powered Insignia — and why proof of oil-pickup seal replacement matters more than anything else.
- Fuel Type
- Diesel
- Engine
- A20DTH
- Model Years
- Approximately 2010–2016
Oil-Pickup Seal Failure
The oil-pickup seal can deteriorate and prevent the engine from receiving sufficient oil pressure. If the warning signs are ignored, the resulting lack of lubrication can cause severe internal damage or complete engine seizure.
This is not a minor fault. It has the potential to turn an otherwise affordable used car into a major engine repair.
What to Check Before Buying
- Ask whether the oil-pickup seal has previously been replaced.
- Request an invoice as evidence rather than relying on a verbal claim.
- Pay attention to any oil-pressure warning when starting the engine.
- Listen carefully for abnormal engine noises.
- Check that the correct oil has been used and changed regularly.
- Have the vehicle inspected if there is no evidence that the seal has been addressed.
Technician's Inside Tip
Proof that the oil-pickup seal has been replaced is particularly valuable on this engine. Without evidence, buyers should allow for preventative replacement when calculating the true cost of the car.
Final Verdict
Only consider an A20DTH-powered Insignia after checking the oil-pickup seal carefully. A documented replacement makes the vehicle a considerably safer purchase; ignoring the issue could result in complete engine failure.
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.
