If we are on to tractors:
Dad's favourites from farming days:
Massey Ferguson 65
Massey Ferguson 35 - the later 3 cylinder Perkins Diesel- the first powered vehicle I ever drove.
Most hated tractor
Massey Ferguson 35 - with early 4 cylinder diesel. Had to be parked at the top of a hill and needed at least 1/2 a mile to bump start. It could be worked and got hot, be turned off for 20 minutes and then refuse to re-start.
My best mate lived on a nearby farm and they had the 4 cylinder Ferguson 35. Luckily they had a big hill but even then a spray can of ether into the air filter was nearly always needed to get the recalcitrant thing to start.