Some "interesting' examples of failure from my best friends 'experiences
1) 1970 Datsun 2000 Fairlady Sports the fore runner to the 240Z and a man's MGB...
a) cam timing chain sprocket ripped from the cam whilst doing 50 mph...lucky he had slowed down as had been doing 90+
2) Total light failure at 100 mph at night on a non-lite highway
2) 1976 VW Golf....bought new
a) large number of welds missing
b) The rear vent air flaps put on back to front so that if you stopped on a dirt road the dust entered the car from the rear like a dust storm of course the flow-thru ventalation did not work as the flap stop outgoing air........
3) Holden Jackaroo....bought new
a)used oil like it was going out of fashion...you talked about litres per mile of oils consumed rather than worried about MPG
b) head Gasket
c) cracked head on a regular basis...eventually put chemiweld in the engine..stopped the cracks but woe betide anyone working on it later on....
4) Range Rover......Hmmmm... were would you start...well it was "British Built'
5) Toyota Land Cruiser...
a) performed a random light display when just siting there...at 'random' the car would flash lights
etc etc etc....Whether new or second hand , whether check out by motoring organisations and given a clean bill of health he has 'fun'