Which Is The Most Economical & Best Family Car in the UK?


The Green Car Guide to the most economical and lowest emission family car on sale in the UK today. We list, road test and compare the best eco-friendly family cars in diesel, petrol, hybrid and extended-range electric vehicle categories, with economy and emissions data.

The list is updated on a monthly basis as new models are released and following our regular road tests where we give the vehicles a full work out under realistic driving conditions.

Diesel & Hybrid Best Family Cars

First place


jaguar-xe-001-80x53Jaguar XE 74.3 mpg (WLTP 58.9 mpg)

The Jaguar XE is the most efficient Family Car that we have driven. With outstanding fuel economy on motorway runs combined with good looks it has to be on your long list.

BMW 320d ED Plus BMW 320d ED 74.3 mpg (WLTP 65.7 mpg)

The 3 Series blends fun with environmental responsibility better than any rival. When combined with one of the most communicative and adjustable chassis in any saloon car and excellent fuel economy it is going to take a lot to topple the 3 Series from the top of the tree.

 Second place

 Skoda Octavia 1.6 TDI CR  72.4 mpg

The Skoda Octavia offers practicality and efficiency in a no nonsense package.

Petrol and Hybrid Family Cars

First place

Toyota Prius Toyota Prius 1.8 VVT-i 94.2 mpg

The 4th generation Prius delivers outstanding CO2 emissions, more practicality, an improved ride and one of the most aerodynamic bodies every produced. If you aren’t after an engaging drive it makes a lot of sense.

Second place

l-family-cars-petrol-lexus-is300h-80x53.jpg Lexus IS 300h  67.3 mpg

The Lexus IS 300h is one of the best sub-100 g/km CO2 cars to drive, with rear-wheel drive, a 2.5-litre petrol engine, and of course an electric motor.

Third place

l-family-cars-petrol-skoda-rapid-80x53-2.jpg Skoda Rapid 1.0 TSI 90 ps S  62.8 mpg

Yes the Skoda Rapid has remarkable similarities with the SEAT Toledo, because there is much development- and parts-sharing going on, but 62.8 mpg is not to be sniffed at.

Plug-in Hybrid

First place

 Toyota Prius Plugin 282 mpg

With a revised battery pack, the Prius Plugin offers a good 39 mile electric range with the excellent efficiency of a standard Prius when the battery runs out. It is also cheaper than the car it replaces.

Second place

BMW 330e BMW 330e Saloon 148.7 mpg

We like the 330e. A lot. To find out why we think it is the best car in the class, read on.

 Third place

Mercedes-Benz C-Class C 350 e Sport 7G-Tronic Plus 17 inch wheels 134.5 mpg

The C 350 e is a technical tour de force but it has a super foe in the form of the BMW 330e and doesn’t quite manage to dethrone the 3 Series.