Compare the most economical diesel cars

High-quality economical diesel cars from rated and reviewed dealers

Most economical diesel cars of 2022

Modern diesels can offer great fuel economy figures allied with impressive torque; the trick is knowing which ones to buy. Our experts here at carwow have taken the guesswork out of your next purchase by picking the most economical diesels on sale today.

peugeot 208

1. Peugeot 208 (74mpg)

9/10
carwow price from
£217* / month (£17,452)
citroen C3

2. Citroen C3 (71mpg)

7/10
carwow price from
£177* / month (£15,076)
vauxhall Corsa

3. Vauxhall Corsa (71mpg)

7/10
carwow price from
£176* / month (£16,028)
volkswagen Golf

4. Volkswagen Golf (67mpg)

9/10
carwow price from
£255* / month (£23,994)
peugeot 2008

5. Peugeot 2008 (66mpg)

9/10
carwow price from
£207* / month (£21,213)
peugeot 508

6. Peugeot 508 (62mpg)

7/10
carwow price from
£331* / month (£25,430)
bmw 3 Series

7. BMW 3 Series (61.4mpg)

9/10
Battery range up to 34 miles
carwow price from
£425* / month
ford Focus

8. Ford Focus (61mpg)

9/10
carwow price from
£297* / month
bmw 1 Series

9. BMW 1 Series (58.9mpg)

8/10
carwow price from
£275* / month (£25,676)
audi A4

10. Audi A4 (58.9mpg)

8/10
carwow price from
£279* / month (£31,983)

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Advice about economical diesel cars

Most economical diesel cars FAQs

While petrol cars have been slowly narrowing the fuel consumption gap with their diesel counterparts, a modern diesel car is still more fuel efficient. This is especially true on longer motorway drives. In-town driving sees much closer figures, but diesels still generally come out on top.

When it comes to reliability, diesel cars tend to have fewer issues than petrol cars, however repairs can cost more and they tend to require more frequent oil changes, so overall running costs are broadly similar.

For town-based driving a hybrid car can be more economical than a diesel as it can make the most of its all-electric capabilities. If your commute is shorter than the electric range of your hybrid, you could get away with using no fuel at all as long as you recharge your battery each day.

On longer motorway journeys a hybrid loses some of its efficiency as it relies more heavily on its internal combustion engine. Here, a diesel will generally offer better fuel economy.

If your hybrid isn’t a plug-in type, then its electric range will be far shorter, and its overall fuel economy can often be eclipsed by a diesel both in town and on the motorway.

Diesels still offer good fuel economy on short, low-speed trips.

An additional consideration is that the diesel particulate filter (DPF) fitted to diesel engines can get clogged up if your driving consists predominantly of these short journeys. This can reduce performance and increase fuel consumption over time.

General tips for keeping your consumption figures low are to stick to the recommended service intervals, ensure that your tyres are not underinflated, use the air conditioner sparingly and avoid harsh acceleration or labouring the engine in too high a gear if you have a manual. 

More specific to diesels, undertaking a longer trip every so often will help the diesel particulate filter (DPF) clean out any accumulated contaminants. This will allow for more efficient running and will lower fuel consumption and improve performance.