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In-depth reviews

Audi A7 Sportback review - MPG, CO2 and Running Costs

Mild hybrid systems help to save fuel when cruising, but not as much as you might expect

Given the huge song and dance Audi makes about its 48v mild hybrid system, the 10 per cent economy improvement claimed for the A7 Sportback doesn’t seem that impressive. Nevertheless, all engines are competitive on paper when it comes to their claimed WLTP fuel economy. 

Starting with the petrol A7, the 2.0-litre 45 TFSI has economy claims of up to 42.8mpg and has the lowest emissions rating of 150g/km. The gives the A7 Sportback an advantage over the Porsche Panamera, as this car doesn't have a 2.0-litre petrol engine, wile the A7 is more efficient than the 2.0-litre equipped versions of the Mercedes CLS. Go for the V6 55 TFSI petrol, and the best economy and emissions scores are 39.2mpg and 163g/km respectively. Of course, all of these figures will change depending on whether you choose Sport, S line or Vorsprung trim and the different wheel sizes that come with them.

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Diesels hold more appeal for running costs. The best of the range is the 40 TDI which has a WLTP best of 60.1mpg and 123g/km in Sport trim. Add quattro 4WD and surprisingly fuel economy improves, thanks in part to the quattro drivetrain that decouples the rear wheels when cruising. The best WLTP figure here is 64.2mpg. Go for a V6 diesel, and the 45 and 50 TDI both manage up to 50.4mpg.

The S7’s switch from petrol to diesel power has had a staggering effect on improving fuel consumption. While the old V8-powered S7 would manage 29.4mpg on the old, rather optimistic NEDC testing cycle, the new model is claimed to achieve 43.5mpg by the same measure. On the new WLTP assessment, it manages 35.8mpg – a figure that, during our time with the S7, seemed entirely plausible. CO2 emissions for the S7 now stand at 170g/km (down from 225g/km), making it a much more affordable car in terms of Benefit in Kind rates, too.

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These running costs are all boosted by the 48v mild hybrid system, but company car users will likely want to hold on for the A7 Sportback e-tron, which will deliver far lower CO2 emissions. However, this model is likely to be prices, and still won't deliver the kind of Benefit In Kind costs that a full EV like a Tesla Moel S delivers. 

Insurance

The A7s initial insurance groups look competitive next to its rivals. The smaller 2.0-litre cars are in group 40, while the V6 models range from group 43-45. That’s considerably better than any variants of the Porsche Panamera (Group 50). Even the older BMW 6 Series Gran Coupe can’t match the Audi’s figures. It still won’t be particularly cheap, however. 

Depreciation

The A7 is a large car, but its competitive price tag means there’s less initial outlay to lose than in many rivals. Trade guide CAP Gold Book predicts best in class residual values, with the 55 TFSI petrol predicted to retain 40 per cent of its value over 3 years/60,000 miles. Be careful with the options list, however, as its easy to add thousands to the car’s list price that you won’t recoup come resale time.

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Which Is Best

Cheapest

  • Name
    50 TFSI e Quattro Black Edition 5dr S Tronic
  • Gearbox type
    Semi-auto
  • Price
    £0

Most Economical

  • Name
    50 TFSI e Quattro Black Edition 5dr S Tronic [C+S]
  • Gearbox type
    Semi-auto
  • Price
    £0

Fastest

  • Name
    S7 TDI Quattro S 5dr Tip Auto
  • Gearbox type
    Semi-auto
  • Price
    £66,150
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