Seat Leon 1.6 Ecomotive
CO2 emissions: 99g/km
Fuel efficiency: 74.3mpg
Road Tax-Exempt: Yes
The Seat Leon is a popular car due to its competitive pricing and drivability. Seat is part of the VW group and the Seat Leon is a more stylish, sportier take on the VW Golf. In fact it uses the same underpinnings but carries a much cheaper price tag.
The Ecomotive range boasts impressive fuel efficiency and CO2 emissions making it road tax and congestion charge exempt. The start stop technology makes it efficient around town but it's big enough to be comfortable on long motorway journeys too.
Another nifty feature is the gearshift indicator, which tells you the optimal time to shift time to reduce fuel consumption. Mean but green.