In-depth reviews

Audi A5 Coupe - MPG, running costs & CO2

Running costs for the Audi A5 shouldn’t vary too much from the equivalent A4 saloon

Carbuyer Rating

4.0 out of 5

Owners Rating

3.7 out of 5

Read owner reviews
MPG, running costs & CO2 Rating

4.0 out of 5

Audi knows its customers want more from the A5 than simply good looks and a fashionable image. Fleet buyers account for an increasingly important share of the executive coupe market, where running costs are all-important. Fortunately, the A5 can be chosen with a remarkably economical diesel engine.

Audi A5 Coupe MPG, CO2 & running costs

The 161bhp 2.0-litre diesel model returns 53.3 to 58.9mpg and CO2 emissions of 125-139g/km for a middling Benefit-in-Kind (BiK) band. Opting for the more powerful 40 TDI engine automatically brings quattro four-wheel-drive, and that sees fuel economy drop to 51.4mpg, with CO2 emissions shooting up to 143-148g/km depending on the trim level chosen. Because Audi’s engines aren’t compliant with the latest RDE2 emissions, it sits in the highest BiK band, so this model won't be popular with company-car drivers.

With no hybrid or plug-in hybrid versions available, the Audi A5 may hold limited appeal for cost-conscious business users. It doesn’t just rival the BMW 4 Series and Mercedes C-Class coupe these days, either; the Polestar 2 and BMW i4 are stylish electric alternatives.

For lower-mileage drivers a choice of three petrol engines is available. The 35 TFSI and 40 TFSI feature front-wheel drive and a seven-speed S tronic automatic gearbox, with both engines capable of producing up to 45.6mpg. CO2 emissions are also similar for both engines, ranging from 141g/km to 156g/km.

The 45 TFSI comes with quattro four-wheel drive, with the trade off for increased grip coming in the form of reduced fuel economy of around 35mpg. This also affects the car’s emissions figure, which ranges from 180-185g/km.

The 342bhp S5 model is powered by a V6 diesel engine and manages a claimed economy figure of 40.9mpg – impressive, considering its high performance. CO2 emissions are 184g/km. We've reviewed this model separately.

After the first year's CO2-based road tax (generally included in the on-the-road price), all Audi A5 Coupes cost the standard rate a year to tax. Unless you buy a base-spec car with the standard solid paint colours, the cost will rise to over £40,000, and then you’re liable for an additional surcharge in years two to six, bringing the annual bill to nearly £500 during that period.

In terms of residual values, Audis tend to stand up well on the used market. Therefore, we don’t expect the A5 – which sells in smaller numbers than the A4 – to depreciate all that much and residual values should remain pretty strong.

Warranty

As with all Audis, the A5 comes with a three-year/60,000-mile warranty. While this isn’t bad, it’s a little way behind its rivals (although exactly the same as Lexus offers). Both Mercedes and BMW also offer three-year warranties as standard, but they don’t have mileage limits – a boon considering these cars’ likely high mileages.

Next Steps

Which Is Best?

Cheapest

  • Name
    40 TFSI 204 Sport 2dr S Tronic
  • Gearbox type
    Semi-auto
  • Price
    £40,355

Most Economical

  • Name
    35 TDI Sport 2dr S Tronic
  • Gearbox type
    Semi-auto
  • Price
    £41,315

Fastest

  • Name
    S5 TDI 341 Quattro 2dr Tiptronic [Comfort+Sound]
  • Gearbox type
    Semi-auto
  • Price
    £54,605

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