With fuel prices increasing all the time and older cars retiring poor economy figures, many of us are now looking to buy a new car that will go a long way without having to refuel - so we've put together a lit of the most economical cars on sale for the realistic motorist.
It can be tempting to simply go for the most economical car in the country, but that might not suit your needs - and remember that even though these cars are cheap to run, they aren't necessarily cheap to buy, as those green credentials add to the list price.
Official fuel economy and emissions tests are notoriously unreliable, but as they are standardised, they do give a solid indication of how cars compare to each other. That's why we've used the official combined figures to compile this list: even if you won't get the quoted figure in the real world, it serves as a solid comparison tool.
Full electric and hybrid cars rarely return anything even close their official economy figures, though, so we've decided to exclude them from our list. Instead, we’ve concentrated on normal cars - especially as they are often much more affordable than their electrically-powered equivalents.
Electric cars do work for some people, though, so if you're looking for ultra-low emission vehicles, we've also got articles on the best hybrid cars, the best electric cars and even the best green cars on sale now.
1. Peugeot 308 Blue HDi - 91.1mpg
2. Volkswagen Golf BlueMotion - 88.3mpg
3. Hyundai i20 1.1 CRDi - 88.3mpg
4. Kia Rio 1.1 CRDi - 88.3mpg
5. Renaulr Clio 1.5 dCi - 88.3mpg
6. Skoda Octavia Greenline - 88.3mpg
7. Ford Fiesta Econetic - 85.6mpg
8. Vauxhall Corsa 1.3 CDTi - 85.6mpg
Do remember that small diesel cars often boast excellent economy, but this may not suit your life. Small city cars are great for commuting into town, but the small dimensions and cramped interior means family trips will be very uncomfortable indeed - and there won't be much space for the shopping.
Diesel engines are not suitable for short trips, but work best for motorway travel - and small petrol engines are the opposite, working well in the city and getting noisy on faster roads. Also, diesel cars usually are more expensive than their petrol equivalents and are more costly to fill up. So if you don't cover long distances, a petrol car could make more financial sense.
You need to think carefully about which car will suit your needs best before you make a decision, rather than thinking purely about the fuel economy.
The cut-off point for our most economical cars list is an astonishing combined cycle return of 85.6mpg. Below that sit a cluster of fantastic cars that average over 80mpg but didn't quite make it into the fuel efficiency hall of fame. Any one of them should still be seriously cheap to run. Here's the best of the rest...
SEAT Leon Ecomotive 1.6 TSI - 85.6mpg
Citroen C3 1.4 e-HDi Airdream - 83.1mpg
Ford Focus ECOnetic - 83.1mpg
Peugeot 208 1.4 e-HDi - 83.1mpg
Volvo V40 D2 - 83.1mpg
Skoda Fabia Greenline Estate 1.2 TDI - 83.1mpg