Nissan's 1990s GT coupe, the Z32 300ZX, is a polarising machine. Lauded for its sporty looks, advanced technology and high-performance from the optional twin-turbo VG30 V6 engine, the 300ZX has also been accused of being bloated, overly complicated, prone to breakdowns, and difficult to work on. All 300ZXs are over 20 years of age now, and suffer reliability issues associated with old cars. Coupled with the fact they're renowned for being difficult to work on thanks to a cramped engine bay packed with complex wiring and plumbing, means they are not for novice mechanics.