Skip advert
Advertisement

Audi A6 Avant estate (2011-2018) - MPG, running costs & CO2

The Audi A6 Ultra diesel model can return up to 64mpg, but general maintenance is pricey

Carbuyer Rating

4.1 out of 5

Owners Rating
Be the first to review
MPG, running costs & CO2 Rating

4.0 out of 5

The Audi A6 Avant is now a diesel-only model, reflecting the popularity of diesel engines in the UK. The only exception to this is the Audi S6 performance model, which packs a thirsty 4.0-litre V8 engine.

Audi A6 Avant MPG & CO2

The Audi A6 Avant range features two diesel engines – a 2.0-litre and a 3.0-litre – in a variety of different versions. That means there’s a wide range of power outputs, each with different MPG and CO2 figures. The 2.0-litre TDI Ultra engine starts the range and is our top pick. That’s largely down to its CO2 emissions of between 114 and 124g/km depending on gearbox type and wheel size. This model also promises to return more than 64mpg fuel economy if you choose the automatic gearbox and drive it carefully. The Ultra is also the only A6 model you can buy with a manual gearbox, but the excellent seven-speed automatic version is both faster and more efficient.

Next up is the 215bhp 3.0-litre TDI. Although it offers a bit more performance, it’s around £6,000 more expensive to buy than the Ultra; it's almost as efficient, but if you choose the quattro four-wheel-drive version, economy drops to around 55mpg.

Advertisement - Article continues below

There's also a 268bhp version of the 3.0-litre TDI, which roughly matches the 215bhp quattro model's CO2 emissions and fuel consumption. That means, depending on the size of wheels you choose, emissions range from 138 to 144g/km, while fuel economy hovers around the 53mpg mark.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Even the top-of-the-range 3.0-litre twin-turbo BiTDI diesel manages to return 45.6mpg and emits 164g/km of CO2, despite the fact that it goes from 0-62mph in 5.2 seconds and has a top speed of 155mph. However, the mind-boggling number is its 740-mile range – meaning you could realistically travel from London to Audi's Ingolstadt headquarters in Germany on a single tank of diesel.

There's also a 1.8-litre petrol engine in the range, as well as the high-performance Audi S6 Avant and the Audi RS6 Avant models. Considering the S6 produces 444bhp, its claimed 30mpg fuel economy and CO2 emissions of 219 to 224g/km aren’t too bad. In top-spec, 597bhp RS6 Performance form, the RS6 claims similar figures, though it would be unwise to rely on coming anywhere close to these figures in the real world.

All A6 Avants attract road tax of at least £140 a year, while those with a list price (including options) of more than £40,000 are liable for an additional surcharge of £310 a year for the first five years of ownership, bringing the annual bill to £450 during that period.

Insurance

The current A6 Avant's insurance ratings run from group 33 for the entry-level diesel to the maximum 50 for the high-performance RS6. The comparable Mercedes E-Class Estate comes in around group 33 or higher, while the BMW 5 Series Touring starts from group 30 for its less powerful diesels.

Warranty

All Audis come with a three-year/60,000-mile warranty. Confusingly, there’s no mileage cap in the first two years, but in year three the car is covered up to 60,000 miles only. The warranty can be extended to four years/75,000 miles for around £550 or to five years/90,000 miles for around £1,300.

Servicing

General maintenance won’t be particularly cheap, but there's a decent range of fixed-price services. These start from as low as £164 for 2.0-litre models, rising to £199 for the bigger-engined cars.

Skip advert
Advertisement

Richard is a former editor of Carbuyer, as well as sister site DrivingElectric.com, and he's now Deputy Editor at Auto Express. Having spent a decade working in the automotive industry, he understands exactly what makes new car buyers tick.

Skip advert
Advertisement

Recommended

Top 10 best hybrid estate cars 2024
Best hybrid estate cars
Best cars
15 Feb 2024

Top 10 best hybrid estate cars 2024

Electric Audi A6 Avant spied in latest photographs
New electric Audi A6 Avant spies
News
15 Sep 2023

Electric Audi A6 Avant spied in latest photographs

Most Popular

Engine management light: top 5 causes of amber engine warning light
Engine warning light
Tips and advice
17 Apr 2024

Engine management light: top 5 causes of amber engine warning light

All-new Citroen C3 Aircross squeezes 7 seats into small SUV body
Citroen C3 Aircross front quarter
News
18 Apr 2024

All-new Citroen C3 Aircross squeezes 7 seats into small SUV body

Best new car deals 2024: this week’s top car offers
Carbuyer best new car deals hero
Deals
19 Apr 2024

Best new car deals 2024: this week’s top car offers

Tips & advice

View All
Car dashboard warning lights: the complete guide
Car dashboard symbols and meanings
Tips and advice
26 Mar 2024

Car dashboard warning lights: the complete guide

Electric car charging stations: a complete guide
Public EV charge point
Tips and advice
11 Jan 2023

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
17 May 2022

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
21 Mar 2024

Average speed cameras: how do they work?

Best cars

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

Top 10 best car interiors

Top 10 best electric cars 2024
best electric cars
Best cars
28 Mar 2024

Top 10 best electric cars 2024

Top 10 best cheap-to-run cars 2024
The best cheap-to-run cars 2023
Best cars
2 Jan 2024

Top 10 best cheap-to-run cars 2024

The UK's top 10 fastest hot hatchbacks 2024
Fastest hot hatchbacks hero
Best cars
2 Jan 2024

The UK's top 10 fastest hot hatchbacks 2024