The Renault Clio dCi 90 ECO is currently the lowest emission car in the UK with a conventional powertrain, emitting 83g/km CO2 along with an excellent 88.3mpg, and there are no serious downsides.

The Mazda6 looks great, it’s spacious, good to drive, and has impressive official economy of 67.3mpg.

The Ford Fiesta 1.0-litre EcoBoost is a perfect match between car and engine, resulting in a vehicle that’s light, agile, fun, responsive, refined and efficient.

The Ford B-MAX is a compact MPV which comes close to offering the agile driving experience of a Fiesta, but with more space, and it still returns an official 55.4mpg from its petrol engine.

The Honda Civic now has a new 1.6-litre diesel engine and it’s proven to be the most economical car in real life use that we’ve tested to date, as well as being an accomplished motorway cruiser.

The Fiat Panda 4x4 is a city car, but if you imagine that this is a typical ‘pretend’ small crossover with no off-road capability you would be very wrong, as our test up a snowy mountain demonstrated…

The Vauxhall Mokka is looking to capitalise on the increasing demand for small ‘urban’ SUVs. The 1.7 CDTI has good official economy which also translates to good economy in real life, but it's let down by a noisy engine.

If you’re looking for a convertible electric car then the smart fortwo ed cabrio is your only choice; but does it make sense?  

The 235mpg Chevrolet Volt is an Extended-Range Electric Vehicle, meaning that it’s an electric vehicle at all times, but its petrol range-extender generator means there’s none of the range anxiety of a pure EV.

The new Renault ZOE is a game changer for electric cars – from £13,995, it’s half the price of a Nissan LEAF, it has a longer range (130 miles), it’s good to drive and it's well designed.