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Audi A6 Avant vs Mercedes B Class comparison

Compare performance (367 HP vs 238 HP), boot space and price (49,700 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Audi A6 Avant or Mercedes B Class?

Audi A6 Avant vs Mercedes B Class: Key differences

Audi A6 Avant

  • noticeably more power
  • clearly more efficient
  • noticeably quicker 0–100 km/h
  • very slightly more trunk space
details

Mercedes B Class

4.9 (5 Reviews)
rate
  • clearly cheaper
  • noticeably lighter
details

All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

Here’s where it gets real: The technical differences in detail

A6 Avant

Costs and Efficiency:

Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.

Mercedes B Class is clearly cheaper – starting at 33,100 £ , while the Audi A6 Avant costs 49,700 £ . That’s a price difference of around 16,585 £.

Fuel consumption also shows a difference: the Audi A6 Avant uses 2.3 L/100km and is clearly more efficient than the Mercedes B Class with 5.1 L/100km. The difference is about 2.8 L/100km.

B Class

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the Audi A6 Avant offers noticeably more power – delivering 367 HP compared to 238 HP. That’s roughly 129 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A6 Avant is noticeably quicker – completing the sprint in 4.7 s, while the Mercedes B Class takes 6.5 s. That’s about 1.8 s quicker.

There’s also a difference in torque: the Audi A6 Avant delivers visibly more torque with 580 Nm compared to 400 Nm. That’s about 180 Nm more.

A6 Avant

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes B Class is noticeably lighter – 1,405 kg compared to 1,865 kg. The difference is around 460 kg.

Looking at boot space, the Audi A6 Avant offers very slightly more boot space – 503 L compared to 455 L. That’s a difference of about 48 L.

When it comes to payload, the Audi A6 Avant carries barely more – 570 kg compared to 550 kg. That’s a difference of about 20 kg.

Who wins the race in the data check?

The Audi A6 Avant is far ahead overall in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.

from £49,700
A6 Avant

Audi A6 Avant

  • Engine Type : Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : Front-Wheel Drive, All-Wheel Drive
  • Power HP : 204 - 367 HP
  • Consumption L/100km : 2.3 - 7.5 L/100km
  • Electric Range : 94 - 101 km
details

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Audi A6 Avant
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A6 Avant

The Audi A6 Avant wraps executive poise and usable practicality into an impeccably finished estate that makes everyday driving feel noticeably more grown-up. It serves up a calm, composed ride and clever packaging for buyers who want space and refinement without ostentation — the sensible choice that still manages to impress.

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Reviews Audi A6 Avant

No reviews yet. Share your experience and help others decide.

Mercedes B Class

The Mercedes B-Class is a smart, grown-up compact people carrier that dresses everyday practicality in a near‑premium polish, perfect for buyers who want comfort and a classy badge without the theatrics. It won’t set your pulse racing on a back road, but it will make school runs, commutes and grocery hauls feel pleasantly civilized — a reliable, slightly posh companion for real life.

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Reviews Mercedes B Class

4.9 (5 Reviews)
rate
Peter
5 Mar 2026, 05:51:19

My wife and I have been driving a Mercedes W247 200d for seven years now, with 93,000 km on the clock. The car is very comfortable even on long trips and economical. At the last service the pads of the electric parking brake were replaced; otherwise no repairs. We love this car.

How do you mainly use this car? (optional): Family car
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

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Audi A6 Avant
Mercedes B Class

Costs and Consumption
Price
49,700 - 70,200 £
Price
33,100 - 52,500 £
Consumption L/100km
2.3 - 7.5 L/100km
Consumption L/100km
5.1 - 6.9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
94 - 101 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
53 - 170 g/km
co2
133 - 156 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
MPV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,865 - 2,240 kg
Curb weight
1,405 - 1,565 kg
Trunk capacity
404 - 503 L
Trunk capacity
445 - 455 L
Length
-
Length
-
Width
1,875 mm
Width
1,796 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
535 - 570 kg
Payload
515 - 550 kg

Engine and Performance
Engine Type
Petrol, Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol MHEV, Diesel
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Dual-Clutch Automatic
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
204 - 367 HP
Power HP
116 - 238 HP
Acceleration 0-100km/h
4.7 - 8.3 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
-
Max Speed
-
Torque
340 - 580 Nm
Torque
200 - 400 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
150 - 270 kW
Power kW
85 - 175 kW
Engine capacity
1,968 - 2,995 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
F, D, E, B
CO2 Efficiency Class
D, E, F
Brand
Audi
Brand
Mercedes-Benz
Is the Audi A6 Avant offered with different drivetrains?

The Audi A6 Avant is offered with Front-Wheel Drive or All-Wheel Drive.

DriveDuel uses data analysis and artificial intelligence to evaluate vehicle data and create content. Content is regularly reviewed and improved. The displayed prices are estimates based on German list prices, adjusted to the respective country’s VAT. Country-specific registration taxes are not included. This information is not legally binding.