In-depth reviews

Porsche 911 coupe - MPG, running costs & CO2

The new Porsche 911 isn’t cheap to run, but it compares favorably with its closest rivals

Carbuyer Rating

4.5 out of 5

MPG, running costs & CO2 Rating

4.0 out of 5

The Porsche 911 is the traditional benchmark for usability in the luxury sports car market and the latest iteration lives up to its reputation. Its claimed economy and emissions figures are better than some lesser performance cars, and while servicing and consumables may be expensive, this is par for the course in the class.

The 911 is more efficient than the Audi R8, with its 5.2-litre V10 petrol engine and economy of 25mpg. The 3.5-litre V6 hybrid version of the Lexus LC coupe (boasting claimed figures of 44mpg and 149g/km of CO2) beats the 911 on this front but the V8 version is more of a match for the 911 in performance terms but can only manage around 25mpg.

Porsche 911 MPG & CO2

Across the 911 line-up, the model designations are separated by ever higher power outputs, with the option of four-wheel drive for the Carrera and Carrera S models. The Turbo S is the fastest and most powerful 911 you can buy while the latest generation of ‘GT’ monikered cars are the most hardcore. Unlike the 911s of old, turbocharging has now been adopted across every model in the line-up, making them more efficient than their predecessors.

The entry-level 911 Carrera coupe is capable of up to 27.4mpg depending on specification, the same figures as the four-wheel drive Carrera 4. Emissions range from 233g/km to 247g/km for the Carrera line-up.

The Carrera S returns a claimed 25.4-28mpg on average, making it very slightly more economical than the standard Carrera, while the Carrera 4S returns 25.4-27.7mpg. Both versions emit around 250g/km of CO2; figures that put the 911 into the highest possible Benefit-in-Kind (BiK) bracket for company-car tax. The seven-speed manual Carrera S can manage a more respectable 28.2mpg.

The more powerful 911 GTS manages up to 27.2mpg and emits 244g/km of CO2. The figures are pretty competitive when compared to the rest of the lineup.

Stepping up to the flagship Turbo S, which is both the most powerful and thirstiest version of the 911, you can expect a fuel economy of up to 23.5mpg. Unsurprisingly, it also has the highest emissions of the standard range, emitting more than 270g/km of CO2. With its manual gearbox, the Sport Classic is even worse, managing 22.4mpg and 285g/km.

It may not have the most outright power but large wings and semi-slick tyres make the 911 GT3 thirsty, with official figures of up to 21.9mpg and CO2 emissions of just over 290g/km.

VED (tax) for all models is charged at the standard rate, plus a surcharge for years two to six of ownership owing to the 911’s high list price. First-year road tax is rolled into the on-the-road price.

No Porsche 911 is exempt from the London Congestion Charge, though plug-in hybrid and all-electric versions are tipped to arrive in a few years’ time. The Porsche Taycan avoids this as it's fully electric.

Insurance group

The Porsche 911 Carrera S slots into group 50 – the highest insurance group possible. Most of the 911’s major rivals are also in this group.

Warranty

The Porsche 911 comes with a three-year unlimited-mileage warranty, a 12-year corrosion warranty and three-year paint warranty. The warranty can be extended if you’re willing to pay for it. The 911’s unlimited-mileage warranty is far better than the three-year, 60,000-mile offering that’s standard on the Audi R8.

Servicing

The Porsche 911 requires a service every 20,000 miles. Prices for servicing for the 992-generation car are yet to be released at the time of writing, but those for the previous model were £675 for a 20,000-mile service and £120 for a brake fluid change. A 111-point check (at just over £200) is required if you want to take out a Porsche Approved Warranty.

Next Steps

Which Is Best?

Cheapest

  • Name
    2dr PDK
  • Gearbox type
    Semi-auto
  • Price
    £87,330

Most Economical

  • Name
    2dr PDK
  • Gearbox type
    Semi-auto
  • Price
    £87,330

Fastest

  • Name
    S 2dr PDK
  • Gearbox type
    Semi-auto
  • Price
    £99,910

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