Britain's greenest cars
Greenest Family Car: Toyota Prius
Beloved of celebrities and even cabinet ministers, the newly revamped Prius continues to revel in its status as Britain's cleanest car.
The five-door Prius uses battery power to back up a 1.5-litre petrol engine and emits just 104g/km of CO2, the lowest of any car on sale.
The battery is recharged during braking and coasting, and it can propel the Prius in utter silence at urban speeds.
You'll have to drive gently to get near the official 65.7mpg in a bid to claw back some of that list price premium. However, annual road tax is just £65, and there are savings for company car drivers and Londoners won't have to pay the Congestion Charge.
Other than price, there's no compromise it's roomy, well equipped and offers a decent drive.
Price: From £17,545
MPG: 65.7
CO2 emissions: 104g/km
Exempt from London Congestion Charge
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