I had a 60 plate SE 140 bhp hatchback/Twindoor with the DSG box until last September.
Excellent car in so many ways, quiet, comfy, plenty quick enough, I got around 46 mpg average during my ownership.
I had it for 3 years and put about 70k miles on it, nothing needed doing apart from normal service items. Got 35k miles off a set of Michelin Cross Climates on it.
It had a towbar already fitted<span style=”font-size: 0.8rem;”> I got it so I used a Thule towbar bike rack, 3 bikes on the back and a adults inside didn’t affect it at all.</span>
I’d certainly recommend one.
£4.5 k for the car you describe looks about right to me but YMMV.