Audi A6

Fuel economy, running costs and specs by model year

The Audi A6 appears in this database in 5 model years, from 2016 to 2020, offered with diesel and gasoline and hybrid power. Combined economy ranges from 22 to 30 MPG across those years, with annual fuel costs of $2,850 to $3,650 at 15,000 miles.

Fuel economy by year

How it compares

Against the average midsize cars in this dataset (about 32 MPG), the A6 sits roughly 6 MPG below that mark on average, making it a thirstier-than-average choice for its class.

Five-year fuel cost

Fuelling a A6 for five years at the EPA's 15,000-mile basis costs roughly $14,250 to $18,250, averaging about $16,250 across the versions here. That is the energy bill alone — it excludes insurance, maintenance and depreciation, which for most owners together exceed what goes into the tank.

The range within the range

Economy across the A6 varies by about 8 MPG between its most and least frugal versions, which run on diesel and gasoline and hybrid. Engine size, turbocharging, drivetrain and even wheel size explain most of that gap, so when you shop a used A6 check which version you are looking at before comparing its running cost to another car.

How it changed over time

Between 2016 and 2020 the A6's average combined economy slipped from about 27 to 24 MPG. Redesigns, new engines and added hybrid or electric versions are usually what move the number, so the year you choose can matter as much as the model.

Best year for fuel economy

The 2016 A6 has the strongest average combined economy in this database at about 27 MPG, while the 2020 is the lowest at about 24 MPG. If running cost is your priority, that is the year to target on the used market; later years may add equipment or safety features instead.

2020 A6 at a glance

Use the comparison tool to set the A6 against a rival, or go back to all Audi models.