Have you ever driven a car with a CVT box?

They are weird as fuck to drive if you're used to a normal one.

They are "Constantly Variable Transmission" and work on the momentum of the car, and it's quite disconcerting when you put your foot down and wait for everything to catch up.

In my opinion, they are a bit like the rotary engine, GREAT idea in principle AND been arounds for donkeys years! but no-one has REALLY been able to get them to work properly and stay working well.

What to look out for.. make sure obviously when you hit it into drive/reverse it doesn't jerk and rev itself. It all works on sensors so revving all over the place and/or a generally jerky/unresponsive drive will show problems.

Look by the lever, if it has just Park, Drive and Reverse, its the CVT.

The Nissan Micras and some Renaults used a similar type box.

But mate, you could have 100k miles of trouble free driving! But if it's for a young lad/new driver.... it's unlikely as they would have less mechanical sympathy than yourself for example