Mercedes A-Class review - MPG, CO2 and running costs
The A-Class has excellent economy figures and solid residual values, but insurance costs are steep
If you're prioritising efficiency, the A 250 e hybrid will appeal as Mercedes claims an all-electric range of 43-44 miles – equating to a staggering maximum of 282.5mpg. That latter figure is somewhat meaningless, however, as with frequent charges you could reasonably run this car for months without filling it up with fuel even once. The fact it emits only 23g/km of CO2 will be more relevant to business users, who will save a fortune in company car tax.
The A-Class diesel options are still pretty frugal and offer excellent returns from a tank of fuel. The A 180 d achieves a claimed maximum of 62.8mpg when paired with the seven-speed auto transmission and CO2 emissions of 117g/km.
Opting for more diesel power doesn't mean you have to take a huge drop in economy - the A 200 d and A 220 d deliver 57.7mpg and 55.4mpg on the combined cycle, respectively.
There's nothing to really separate the A 180 and A 200 petrol models either in terms of fuel efficiency, with both capable of around 47mpg. Emissions are dependent on which equipment level you choose, but start from 134g/km for the A 180 and 135g/km for the A 200 six-speed manual versions.
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The A 250 trades some economy for performance compared to the smaller petrol, though if it gets close to its claimed 41.5mpg and 155g/km in the real world, it’ll be impressive.
The strong figures across the standard A-Class range are no doubt partly thanks to a slippery body shape, which Mercedes claims that is the most aerodynamic in its class.
Naturally, the performance-oriented AMG A 45 S model is the least efficient of the range, although a claimed 31.4mpg on the combined cycle is still a good return when you consider it produces a staggering 415bhp.
The A 180 d starts from group 17 insurance, while the A 220 d in top AMG Line Premium Plus spec is in group 27. Further up the range, a high-end A 250 falls into group 31, while the 415bhp AMG A 45 S 4MATIC+ Plus will be pricey to insure, sitting in group 41.
Although buyers will have to pay handsomely to own and insure a new A-Class, the range offers good residual values with an average of 47% retained over 3 years and 36,000 miles. The A 250 e models perform even better, keeping hold of around 51% of their original value over the same period.
In this review
- 1Mercedes A-Class reviewThe latest Mercedes A-Class premium hatch is one of the most tech-laden cars on sale, of any size
- 2Engines, performance and driveA great cruiser with strong performance, the A-Class has uninspiring handling and the small petrol lacks refinement
- 3MPG, CO2 and Running Costs - currently readingThe A-Class has excellent economy figures and solid residual values, but insurance costs are steep
- 4Interior, design and technologyGorgeous design houses the finest infotainment system available at almost any price
- 5Practicality, comfort and boot spaceBoot and cubby spaces are an improvement over the old car’s, but the A-Class is still not as roomy as an Audi A3
- 6Reliability and SafetyThe A-Class has top marks for safety, but Mercedes has below average brand satisfaction rating