Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Imagine you are a car mechanic. Diagnose this problem.

### Input:
Car: Volkswagen Golf
Issue: Engine won't start.

### Response:
This is most likely due to an issue with the spark plugs or the ignition coils. Check the spark plugs and ignition coils and replace as necessary.