Guess I'm fortunate, have not regretted any of the cars I bought.
In order:
Mazda Midge (secondhand)
Alfa Romeo 147 2.0TS (new)
Alfa Romeo 147 2.0TS Facelift (new)
Audi A4 1.8T (pre-owned)
BMW 320d (pre-owned)
BMW320i (demo)
Toyota Fortuner (new) - (there is a thread on here about regretting which dealer I used as they assist with fixing issues)
In order:
Mazda Midge (secondhand)
Alfa Romeo 147 2.0TS (new)
Alfa Romeo 147 2.0TS Facelift (new)
Audi A4 1.8T (pre-owned)
BMW 320d (pre-owned)
BMW320i (demo)
Toyota Fortuner (new) - (there is a thread on here about regretting which dealer I used as they assist with fixing issues)