Audi A6 Avant estate - MPG, running costs & CO2

The Audi A6 Avant has new plug-in hybrid engines to appeal to company-car buyers

Carbuyer Rating

4.3 out of 5

Owners Rating

5.0 out of 5

Read owner reviews
MPG, running costs & CO2 Rating

4.0 out of 5

In a class so heavily targeted at highly taxed company-car drivers, efficiency and CO2 emissions are vital to a model's success or failure. The big German does well here thanks to two versions of a plug-in hybrid and a frugal entry-level diesel engine, which is sure to make up the bulk of A6 Avant sales. For private buyers, or those with a bigger monthly budget, there's also a powerful 3.0-litre TDI with stonking performance, or three petrol options.

Audi A6 Avant MPG & CO2

Opt for the sensible, 2.0-litre four-cylinder turbodiesel with mild-hybrid technology (badged 40 TDI) and fuel economy is 48.7mpg, with CO2 emissions of 148-152g/km. That's as long as 18 or 19-inch alloys are fitted, because upgrading to 20-inch wheels sees running costs creep up slightly to 46.3mpg and 161g/km, but all diesel A6s occupy the top Benefit-in-Kind (BiK) band of 37%.

Company-car drivers are unlikely to choose the 3.0-litre 50 TDI quattro model, but figures of 39mpg and 188g/km aren't awful for such a large and fast estate that's also equipped with quattro four-wheel drive.

With diesel taxed so heavily, many drivers will be moving to the plug-in hybrid instead. Keep the battery topped up and you could achieve 217mpg and an all-electric range of over 30 miles. More relevant will be its 30g/km official CO2 figure, equating to a BiK rate that’s less than a third of the diesels.

Lower-mileage drivers may be better off with one of the petrol engines. The cheapest 40 TFSI returns up to 38mpg, while stepping up to the 45 TFSI with its standard-fit four-wheel drive only drops the figure to 35mpg. Above that is a 55 TFSI engine that’s as quick as a hot hatchback and returns 33.6mpg at a steady cruise but it’s expensive to buy in the first place. All these petrol engines sit in the top BiK band.

Insurance groups

Full insurance group listings have now been released for the A6 Avant, and the 50 TDI saloon sits in group 42 out of 50. The cheapest to insure is the 40 TDI, which sits in group 36 (or 38 for S Line models).

Warranty

Audi's warranty covers the car for three years/60,000 miles, which is rather stingy next to the unlimited-mileage offerings of several rivals, including Mercedes. Paintwork is covered for three years, and there is a 12-year corrosion warranty. Three years of UK roadside assistance is also included. For an extra cost, the warranty can be extended to four or five years.

Servicing

There are two types of servicing available for the A6 Avant, which can be chosen at the time of purchase. Owners covering less than around 10,000 miles a year or making frequent short trips are recommended to go for annual servicing. Alternatively, the car's inbuilt sensors can determine when a service is required, and this is likely to provide motorway drivers slightly longer gaps between services. Audi typically offers fixed-price servicing deals to help spread the cost of maintenance, so it's worth asking about these at the dealership.

Recommended

Audi A6 Avant estate review
Audi A6 Avant driving
Audi A6 Avant estate
29 Jul 2021

Audi A6 Avant estate review

Most Popular

Genesis GV80 SUV review
Genesis GV80 SUV
Genesis GV80
19 Oct 2021

Genesis GV80 SUV review

Top 10 best company cars 2021
Hyundai Ioniq 5 front 3/4 cornering
Best cars
14 Oct 2021

Top 10 best company cars 2021

Buying a car from a dealership: 20 car buying secrets that dealers don't want you to know
20 car buying secrets the dealers don’t want you to know - gallery
Car buying
8 Oct 2021

Buying a car from a dealership: 20 car buying secrets that dealers don't want you to know

Tips & advice

View All
Car dashboard warning lights: the complete guide
Car dashboard symbols and meanings
Tips and advice
10 Aug 2021

Car dashboard warning lights: the complete guide

Electric car charging stations: a complete guide
Electric car charging station
Tips and advice
3 Jun 2021

Electric car charging stations: a complete guide

PCP vs HP – which type of car finance is right for you?
PCP vs HP
Tips and advice
29 Sep 2021

PCP vs HP – which type of car finance is right for you?

Average speed cameras: how do they work?
Average speed cameras: how do they work?
Tips and advice
23 Jul 2021

Average speed cameras: how do they work?

Best cars

View All
Top 10 best car interiors 2021
Peugeot 208 hatchback
Best cars
25 Jun 2021

Top 10 best car interiors 2021

Top 10 best electric cars 2021
Ioniq 5
Best cars
20 Oct 2021

Top 10 best electric cars 2021

Top 10 best cheap-to-run cars 2021
Toyota Prius front 3/4 cornering
Best cars
10 Jun 2021

Top 10 best cheap-to-run cars 2021

The UK's top 10 fastest hot hatchbacks
Mercedes AMG A45 - rear
Hot hatches
25 Jun 2021

The UK's top 10 fastest hot hatchbacks