Here are some examples of parts failure what to be on the lookout for...

Blocked Oil Pick Up

Wackers VW & Audi

Blown Cylinder Head Gasket

Wackers VW & Audi

Burnt Clutch

Wackers VW & Audi

Blown Piston

Wackers VW & Audi

Bent Valve

Wackers VW & Audi

Blown Piston

Wackers VW & Audi

Blown Valve

Wackers VW & Audi

Cracked Cylinder Head

Wackers VW & Audi

Cracked Cylinder Head

Wackers VW & Audi

Cracked Serpentine Belt

Wackers VW & Audi

Cracked Timing Belt

Wackers VW & Audi

Damaged Timing Belt

Wackers VW & Audi

Damaged Timing Belt

Wackers VW & Audi

Engine Electrolysis

Wackers VW & Audi

Engine Electrolysis

Wackers VW & Audi

Leaking Radiator

Wackers VW & Audi

Leaking Shock Absorber

Wackers VW & Audi

Overheating

Wackers VW & Audi

Overheating 2

Wackers VW & Audi

Overheating 3

Wackers VW & Audi

Snapped Timing Chain

Wackers VW & Audi

Stripped Timing Belt

Wackers VW & Audi

Torn CV Boot

Wackers VW & Audi

Worn Wheel Bearing

Wackers VW & Audi

Worn Suspension Bush

Wackers VW & Audi

Worn Suspension Bush

Wackers VW & Audi

Worn CV Joint

Wackers VW & Audi

Worn Brakes

Wackers VW & Audi

Worn Brake Pads

Wackers VW & Audi

Worn Brake Disks

Wackers VW & Audi

Waterpump Impeller came loose

Wackers VW & Audi

Waterpump Failure

Wackers VW & Audi

Engine camshaft bearing caps seized

Wackers VW & Audi

Crankshaft ran bearing due to lack of oil pressure

Wackers VW & Audi

Engine camshaft has run bearing due to lack of oil pressure

Wackers VW & Audi

Worn tyres due to worn shock absorbers and suspension bushes

Wackers VW & Audi