A test drive is not just a chance to see whether you like driving the car, it’s also the perfect chance to try and spot any potential problems. Make sure you check the engine and oil level before you set off (this could indicate whether the car needs a service), and check the rearview mirror for excessive exhaust smoke.
Be mindful of the steering - are there any noises when turning the steering wheel and does the car remain straight on a level stretch of road. Also, check the brakes work as they’re supposed to, and listen out for any vibrations or odd sounds. Don’t forget to check the clutch and all the gears to make sure they change smoothly as well.
It is also a good idea to check with your insurance policy to confirm whether you are insured to drive another car, otherwise, you can usually arrange temporary cover for your test drive.