For something as powerful-per-litre as the A45, it is proving to be surprisingly reliable. However, there are still some things to look out for:
Engine: Early 2014 A45s suffered from oil feed issues to the turbocharger. Because they didn't have an anti-surge valve, pressure could only escape through the turbo impeller, which caused it to wear. There was a recall to get this repaired, so check it has been done. Any delay or sluggish response when you open the throttle on a test drive could be an issue with the crankshaft sensor. You'll pay £30-£50 for a replacement. Coolant leaks can occur as a result of water pump and thermostat housing failures.
Gearbox: Listen out for a distinct crunching noise from the gearbox when you put the car in reverse from cold. Software updates can cure it, but it can be a mechanical issue that could cost a fortune to fix if you don't have a warranty. Watch for slow and jerky downshifts, too.
Air-conditioning: The air-conditioning system can fail due to a faulty compressor. A replacement costs more than £300, so make sure it works. A blown fuse or broken resistor can stop the blowers from working. Worst case is the blower motor has failed, which can cost around £90-£100 to repair.
Interior: Make sure the sports seats are in good condition, because the bolsters can wear prematurely. Drain plugs in the boot can leak water into the rear footwells. Check the plugs themselves, and the carpets for damp.
Body: Look for cracks and scratches in the plastic panel above the windscreen. This is typically caused by sun damage. Some owners recommend painting it rather than replacing.
