What's in this guide
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Green cars explained
Going green is good for the environment and could land you with a refined, reliable motor.
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Hybrid cars
The electric motors in green hybrid cars can support or substitute combustion engines.
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Diesel hybrid cars
Peugeot aims to sell the first diesel hybrid in 2010 – with a claimed economy of 83mpg.
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Hydrogen hybrid cars
Hydrogen cars are already in production, but they're not yet a practical choice.
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Hydrogen fuel cell cars
Could zero-emission cars of the future be powered by liquid hydrogen?
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Stop-start systems
Turning the engine off when a car stops is an obvious way to save fuel.
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Brake energy regeneration
New technology makes it possible to harness the energy that's lost through braking.
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Gearbox and aero tweaks
Tweaking conventional cars to make them greener is a cheaper option.



