Aston Martin, Valiant Common Issues

I couldn't find any information on an "Aston Martin Valiant". It's possible that it may be a made-up or non-existent model.

However, if you're referring to the Dodge Valiant, here is a list of potential issues in order from most common to least rare based on various sources:

1. Rust and corrosion (door sills, trunk floor, wheel wells)
2. Transmission problems (slipping, hesitation, failure to engage gears)
3. Brake wear and noise (spongy brake pedal, grinding or squealing noises)
4. Engine oil leaks (valve cover gaskets, timing chain covers)
5. Water pump failure
6. Alternator problems (failing to charge, overheating)
7. Starter motor issues (weak or failed starter)
8. Battery drain and dead batteries
9. Headlight dimming and lens hazing
10. Rear differential noise and leak
11. Front end vibrations and play in steering components
12. Power window regulator failure
13. Door lock problems (failed latches, sticky doors)
14. Heater core leaks and clogged heater hoses
15. Air conditioning system failures (leaks, compressor problems)
16. Fuel pump issues (weak or failed fuel pumps)
17. Ignition switch faults and faulty ignition coils
18. ABS system malfunctions ( warning lights on, spongy brake pedal)
19. Transmission mounts failure and transmission rattle
20. Rear main seal leak and engine oil consumption