In-depth Reviews

Audi RS5 Coupe - MPG, running costs & CO2

Economy improved over previous Audi RS5, but running costs are still high

Carbuyer Rating

3.5 out of 5

MPG, running costs & CO2 Rating

2.5 out of 5

You should never allow yourself to think that an RS5 will be cheap to run simply because it’s closely related to the regular Audi A5 coupe. Having said all that, overall running costs for an RS5 are likely to be lower than you might encounter with certain similarly fast sports cars.

Audi RS5 MPG & CO2

The RS5’s move away from the previous V8 engine in favour of a smaller, turbocharged V6 was largely for reasons of fuel efficiency. As legislation forces carmakers to reduce CO2 emissions across their product line-ups, the biggest petrol V8s are becoming an endangered species. Just as Mercedes has been forced to part with its 6.2-litre AMG V8, Audi’s 4.2-litre V8 has been sidelined in favour of this 2.9-litre V6 engine.

The changes mean that the latest RS5 can manage 30.4mpg under WLTP the testing cycle – a big improvement over the previous model. Do be aware that, just as in the previous RS5, you're not likely to see the official figure if you drive the car with any enthusiasm – it's realistic to expect an MPG figure in the high twenties in real-world driving. CO2 emissions have been slashed, too – 219g/km still places the RS5 in the top Benefit-in-Kind (BiK) company-car tax band for business users, but is far less costly to the environment than the previous 246g/km figure from the previous V8 petrol engine.

As with all cars costing over £40,000 when new, the RS5 is liable for a £475 bill on the first five occasions you renew its annual road tax. Thereafter, it drops to £150 a year.


RS5 models sit within insurance groups 42 to 47. Whichever version and trim you go for however, the Audi RS5 is likely to be an expensive car to insure.

This is comparable with the BMW M4 is rated in insurance group 42, while the Mercedes C-Class C63 AMG starts in insurance group 47. It’s worth remembering, though, that the insurance group rating can only indicate the insurance risk associated with the car. The cost can vary hugely depending on your personal circumstances, so it’s always well worth seeking a quote before you make a purchase decision.


The Audi RS5 requires routine servicing just as frequently as any other Audi – it’s recommended to be serviced annually, although high-mileage drivers can opt for ‘long-life’ servicing that makes use of oil-quality sensors to determine when a service is due. Audi can provide a service plan to help you adhere to your car’s recommended service schedule.

It’s worth remembering that consumable items – such as tyres, brake discs and pads, will be far more expensive for an RS5 than for other members of the A5 range. Such is the higher power they have to deal with that heavier-duty parts are required.


Every new Audi sold in the UK benefits from a three-year/60,000-mile warranty, which can be extended at extra cost. The same duration is offered by brands under the Volkswagen Group umbrella, including VW and Skoda. Other German brands are a little more generous – Mercedes and BMW both offer a three-year/unlimited-mileage warranty.

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