In-depth reviews

Audi A7 Sportback hatchback - MPG, running costs & CO2

Advanced fuel-saving technology in the Audi A7 Sportback reduces impact of choosing a large engine

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MPG, running costs & CO2 Rating

3.5 out of 5

It might be a big car, but the A7 features some impressive technology to help give it the fuel-efficiency of a smaller model. Versions fitted with a V6 engine are equipped with a 48-volt mild hybrid system that harvests energy while you brake and stores it in a small lithium-ion battery. This electricity can then be used by other features in the car, taking some strain off the engine.

One such function allows the A7 to coast safely with the engine automatically switched off at speeds of between 34 and 99mph, then restart almost imperceptibly when you press the accelerator. A beefed-up alternator and clever software also means the start and stop system works more of the time, functioning at speeds below 13mph, then restarting more intuitively by using cameras to sense when the traffic ahead pulls away.

Audi A7 Sportback MPG & CO2

Audi is offering the A7 Sportback with a four-cylinder 2.0-litre diesel engine (the 40 TDI) for the first time, which means company-car drivers escape the top band of Benefit-in-Kind (BiK) tax. Despite being a big car, it can return up to 50.4mpg and emits from 146g/km of CO2 with 19-inch alloy wheels fitted, which means a 33% BiK rating at best. The economy is achieved despite the fact it only has a 12-volt mild-hybrid setup that doesn't offer features like engine-off coasting.

The 3.0-litre 45 TDI and 50 TDI engines are thirstier, returning up to 39.8mpg, along with CO2 figures from 176g/km and a top BiK rating of 37%.

The 3.0-litre V6 TFSI petrol 55 TFSI can return up to 33.2mpg and emits from 194g/km of CO2, figures that don’t appear exceptional but aren’t too bad considering the car’s performance. However, its emissions also put the engine into the highest BiK band.

There's also a 2.0-litre 45 TFSI option but the fact it still has quattro means it doesn't offer quite the economy boost you might expect. It can return up to 35.3mpg and emits at least 181g/km of CO2, so still attracts the top rate of BiK tax.

Economy is far better when coupled with an electric motor in the plug-in hybrid Audi A7 50 or 55 TFSIe models. This sees a large 17.9kWh battery pack fitted, giving its electric motor enough power for a 31-mile potential driving range and CO2 emissions from 32g//km for significantly lower BiK rates. In theory many drivers will be able to carry out their commute without using a single drop of fuel, even with brief stints on the motorway, while low C02 emissions of . The powertrain can also act as a hybrid, juggling power between the electric motor and internal combustion engine depending on how the car is being driven. Charging the battery pack takes around 2.5 hours using a 7kW home wallbox.

Because it costs over £40,000, the Audi A7 costs £465 in annual road tax in years two to six, after which it returns to the standard £145 a year. Thanks to its alternative fuel status, road tax is reduced to £135 a year for the 55 TFSIe.

Insurance groups

As it’s expensive and powerful, the A7 Sportback isn’t cheap to insure. The Sport 40 TDI is most affordable, residing in group 40. The 45 and 55 TFSI models start in groups 42 and 44 out of 50, while the 45 TDI is in group 43.

Warranty

Like all other Audi models, the A7 comes with a standard three-year/60,000-mile warranty that can be extended if you pay an additional cost. This is fairly stingy, with BMW offering a three-year/unlimited-mileage warranty, and some manufacturers providing five or even seven years as standard.

Servicing

Audi has fixed prices for its servicing, while also offering servicing plans. The latter allow you to pay upfront for a set period of maintenance, or spread the cost over monthly payments to make it easier to budget for servicing.

Next Steps

Which Is Best?

Cheapest

  • Name
    45 TFSI Sport 5dr S Tronic
  • Gearbox type
    Semi-auto
  • Price
    £48,360

Most Economical

  • Name
    50 TFSI e 17.9kWh Quattro Sport 5dr S Tronic
  • Gearbox type
    Semi-auto
  • Price
    £60,355

Fastest

  • Name
    S7 TDI Quattro S 5dr Tip Auto
  • Gearbox type
    Semi-auto
  • Price
    £66,700

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