True MPG: best and worst SUVs 2018

What Car?'s True MPG tests show what you can really expect from a car. Here we reveal the most and least efficient SUVs we've ever tested...

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Darren Moss
14 November 2017

7. Mazda CX-5 2.2d 150

Used Mazda CX-5 17-present

Official fuel economy: 61.4mpg; True MPG: 48.3mpg; Shortfall: 21.4%

The Mazda CX-5 is a five-seat large SUV with a spacious and comfortable interior, and this diesel version is both refined and reasonably economical. Most of the CX-5's rivals offer the option of seven seats, but if you don't need them then it should definitely be on your shortlist.

Read our full Mazda CX-5 review

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6. Kia Niro Hybrid

True MPG: best and worst SUVs 2018

Official fuel economy: 74.3mpg; True MPG: 50.1mpg; Shortfall: 32.6%

When we fuel-tested this hybrid model, it fell 32.6% short of its official average – more than any other SUV. However, it still topped 50mpg, and its practical interior and seven-year warranty are further plus points.

Read our full Kia Niro review

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5. Seat Ateca 1.6 TDI 115

Nissan Qashqai vs Seat Ateca vs Vauxhall Mokka X

Official fuel economy: 65.7mpg; True MPG: 50.2mpg; Shortfall: 23.6%

The Ateca is such a brilliant all-rounder that we named it our 2017 Small SUV of the Year. We're particularly keen on the turbocharged 1.4-litre petrol model, but the 1.6-litre diesel is the most efficient option, with a real-world average of 50.2mpg.

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Next: more of the most fuel efficient SUVs >