Bugatti Veyron – 452 km (Photo: Bugatti)

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Do we really need to explain why this road-going rocket is ranked sixth on this list? With a quad-turbocharged W16 engine producing 1,001 hp, a seven-speed twin-clutch transmission, its fuel consumption is astronomical. Despite its 100-litre fuel tank, it can travel a mere 452 km between fill-ups.

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