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In-depth reviews

Aston Martin DB11 coupe - MPG, running costs & CO2

Turbocharged engine boosts efficiency, but you’ll still need deep pockets to run the Aston Martin DB11

Carbuyer Rating

4.1 out of 5

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MPG, running costs & CO2 Rating

2.5 out of 5

Low running costs aren’t usually a pressing concern of buyers at this end of the car market, yet the DB11 makes a big step forward in terms of efficiency over its predecessor. Any claims of frugality have to be put in context, though – a near-200mph supercar is no machine for misers.

Aston Martin DB11 MPG & CO2

In the search of efficiency and weight-saving in its next-generation model, Aston Martin developed a more compact 5.2-litre twin-turbocharged V12 engine for the DB11. The result is a drop in fuel consumption and lower CO2 emissions over the marque's previous V12 engine, while stop-start technology is employed in a bid to save fuel.

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However, thirst is still considerable at 24mpg and CO2 emissions are high, too, at 270g/km. As you might expect, this lands the DB11 squarely in the top 37% bracket for Benefit-in-Kind tax, an important consideration for anybody in a position to run an Aston Martin as a company car. Going for the smaller 4.0-litre V8 engine does bring a considerable improvement in fuel consumption over the V12 – around 7 or 8mpg, Aston Martin claims – but you can still expect the same hefty company-car tax bill.

Other than fuel consumption, buyers should be aware that additional costs come with frequently exercising all that power – the 1,770kg DB11 takes a lot of stopping, so tyre and brake wear can add up. Anybody inclined to use their Aston Martin as a trackday car will be embarking on a seriously expensive hobby.

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It hasn’t yet been established how well the DB11 will hold on to its value as it ages. The DB9 retain about 40% of its purchase price after three years. However, while demand for the DB11 currently outstrips supply, it’s hard to accurately predict exactly what used values will be a few years down the line.

Servicing

While the Aston Martin DB11 isn’t likely to need much more scheduled servicing than other Aston Martin models, the big costs will be in consumables like tyres, brake pads and brake discs. These will require more frequent replacement depending on how regularly you exploit the car’s extraordinary capabilities.

You can’t really cut corners on maintenance with a car like this, as doing so will considerably hurt its secondhand value and may also affect its performance and reliability. It’s probably a good idea not to put a cap on your maintenance budget until you’ve owned the car for long enough to accurately gauge your outgoings. A main Aston Martin dealer will be able to provide accurate advice about this.

Warranty

The DB11 enjoys the same three-year/unlimited-mileage warranty as other Aston Martin models, and this can be extended for two further years at an extra charge. The extra warranty period policy can be chosen in Plus, Premium or Classic levels, with varying support depending on your needs and budget.

Insurance

Insurance group ratings for UK-market cars are based on research carried out by British security and insurance experts Thatcham, and as yet no group data has been released for the DB11. We expect it to be placed in the highest group 50 rating, alongside its Ferrari, Bentley and Maserati competitors.

Every DB11 is protected by an alarm and immobiliser system, plus a tracking device is installed – although it’s up to you to annually subscribe to keep that system active.

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Richard is a former editor of Carbuyer, as well as sister site DrivingElectric.com, and he's now Deputy Editor at Auto Express. Having spent a decade working in the automotive industry, he understands exactly what makes new car buyers tick.

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