Parkers overall rating: 4.4 out of 5 4.4

Miles per pound (mpp) Miles per pound (mpp)

Petrol engines 4.7 - 7.4 mpp
Diesel engines 6.1 - 9.3 mpp
Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only, and typical current fuel or electricity costs.

Fuel economy

Petrol engines 28.8 - 45.6 mpg
Diesel engines 38.7 - 58.9 mpg

Audi A5 Coupe driving, rear 2021

  • Efficient suite of non-hybrid engines
  • Driving aids reduce consumption and stress
  • Strong residuals and low-cost leases

How much does it cost to run?

On the lower-power models, wheel choice can make a small difference to emissions, so check your chosen specification is in the right band or meets your own expectations of environmental friendliness.

Fuel economy is good across the board with only the most powerful petrol engines dipping below 40mpg. In the real-world, you'll be hard-pressed to see much above 25mpg in the RS 5.

MPG and CO2

  • 35 TFSI 2.0-litre: 40.9-45.6mpg, 141-156g/km CO2
  • 40 TFSI 2.0-litre: 40.9-45.6mpg, 140-156g/km CO2
  • 45 TFSI 2.0-litre Quattro: 36.2-37.7mpg, 170-176g/km CO2
  • 35 TDI 2.0-litre: 53.3-58.9mpg, 125-140g/km CO2
  • 40 TDI 2.0-litre Quattro: 49.6-54.3mpg, 135-149g/km CO2
  • S5 TDI 3.0-litre V6 Quattro: 39.2-40.4mpg, 184-189g/km CO2
  • RS 5 2.9-litre V6: 28.8-30.1mpg, 214-221g/km

Audi A5 exhaust 2021

Fuel tank capacity ranges between 54-58 litres, which should give meaningful range for each fill-up.


  • Fit and finish is excellent
  • Longevity of technology still an unknown
  • Most engines proven to be reliable

This is an important car for Audi, so you can be sure it’s been designed and built to the highest order. It also shares a lot of kit with other vehicles in the Volkswagen Group, from drivetrains to interior components, so you can buy with confidence. As with the A4, our only concern would be surrounding the Virtual Cockpit system and some of the electrics, which proved problematic in some early Audi TT models.

The Audi RS 5 uses a mixture of Porsche and Audi running gear. There’s no reason to believe it will be less reliable than other models of A5, but it may be less tolerant of neglect. As a high performance model, expect it to be more expensive for consumables such as brake pads, discs and tyres.

Read what owners have to say with their own reviews

Ongoing running costs

Road tax (12 months) £20 - £490
See tax rates for all versions
Insurance group 25 - 48
How much is it to insure?