I think I have to nominate the Mini Metro, British Leyland’s hatch back. It’s bad because:

1 - It’s not a Mini, and was Leyland’s half-arsed attempt to glean some kudos off the Mini name.

2 - It is the Arch Criminal IMHO of car design. The first of the constant stream of dull, uninspiring cheese wedge car shapes to pollute my visual senses since it first came out. A ghastly shape, and every single small car has adopted ever since.

I learnt to drive in one....

Clicky

Nasty. Nasty. 'king nasty.