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Audi A4 Avant vs Mercedes B Class comparison

Compare performance (470 HP vs 238 HP), boot space and price (37,200 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Audi A4 Avant or Mercedes B Class?

Audi A4 Avant vs Mercedes B Class: Key differences

Audi A4 Avant

5 (1 Reviews)
rate
  • significantly more power
  • only slightly more efficient
  • substantially quicker 0–100 km/h
  • marginally more trunk space
details

Mercedes B Class

4.9 (5 Reviews)
rate
  • somewhat cheaper
  • a bit 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

A4 Avant

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Mercedes B Class is somewhat cheaper – starting at 33,100 £ , while the Audi A4 Avant costs 37,200 £ . That’s a price difference of around 4,113 £.

Fuel consumption also shows a difference: the Audi A4 Avant uses 4.8 L/100km and is only slightly more efficient than the Mercedes B Class with 5.1 L/100km. The difference is about 0.3 L/100km.

B Class

Engine and Performance:

Power, torque and acceleration say a lot about how a car feels on the road. This is where you see which model delivers more driving dynamics.

When it comes to engine power, the Audi A4 Avant offers significantly more power – delivering 470 HP compared to 238 HP. That’s roughly 232 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A4 Avant is substantially quicker – completing the sprint in 3.7 s, while the Mercedes B Class takes 6.5 s. That’s about 2.8 s quicker.

There’s also a difference in torque: the Audi A4 Avant delivers clearly more torque with 600 Nm compared to 400 Nm. That’s about 200 Nm more.

A4 Avant

Space and Everyday Use:

Whether family car or daily driver – which one offers more room, flexibility and comfort?

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes B Class is a bit lighter – 1,405 kg compared to 1,595 kg. The difference is around 190 kg.

Looking at boot space, the Audi A4 Avant offers marginally more boot space – 495 L compared to 455 L. That’s a difference of about 40 L.

When it comes to payload, the Audi A4 Avant carries marginally more – 565 kg compared to 550 kg. That’s a difference of about 15 kg.

Who wins the race in the data check?

The Audi A4 Avant holds a decisive overall lead 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 £37,200
A4 Avant

Audi A4 Avant

  • Engine Type Diesel MHEV, Petrol MHEV, Petrol
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Front-Wheel Drive
  • Power HP 136 - 470 HP
  • Consumption L/100km 4.8 - 9.7 L/100km
details

Frequently compared as well

Mercedes B Class
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Audi A4 Avant
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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A4 Avant

The Audi A4 Avant blends elegant, understated styling with practical estate versatility, making it a polished choice for drivers who want both poise and generous cargo space. Inside, the cabin feels premium and tech-forward while the composed driving manners turn routine journeys into a quietly satisfying experience—exactly the sensible indulgence buyers will appreciate.

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Reviews Audi A4 Avant

5 (1 Reviews)
rate

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 A4 Avant
Mercedes B Class

Costs and Consumption
Price
37,200 - 122,500 £
Price
33,100 - 52,500 £
Consumption L/100km
4.8 - 9.7 L/100km
Consumption L/100km
5.1 - 6.9 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
126 - 220 g/km
co2
133 - 156 g/km
Fuel tank capacity
40 - 58 L
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
MPV
Seats
5
Seats
5
Doors
5
Doors
-
Curb weight
1,595 - 1,820 kg
Curb weight
1,405 - 1,565 kg
Trunk capacity
495 L
Trunk capacity
445 - 455 L
Length
4,750 - 4,782 mm
Length
-
Width
1,842 - 1,866 mm
Width
1,796 mm
Height
1,428 - 1,493 mm
Height
-
Max trunk capacity
1,495 L
Max trunk capacity
-
Payload
510 - 565 kg
Payload
515 - 550 kg

Engine and Performance
Engine Type
Diesel MHEV, Petrol MHEV, Petrol
Engine Type
Petrol MHEV, Diesel
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic, Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
All-Wheel Drive, Front-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
136 - 470 HP
Power HP
116 - 238 HP
Acceleration 0-100km/h
3.7 - 9.8 s
Acceleration 0-100km/h
6.5 - 10 s
Max Speed
210 - 300 km/h
Max Speed
-
Torque
270 - 600 Nm
Torque
200 - 400 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4
Power kW
100 - 346 kW
Power kW
85 - 175 kW
Engine capacity
1,968 - 2,894 cm3
Engine capacity
1,332 - 1,991 cm3

General
Model Year
2,023 - 2,024
Model Year
2025
CO2 Efficiency Class
E, F, D, G
CO2 Efficiency Class
D, E, F
Brand
Audi
Brand
Mercedes-Benz
What drivetrain options does the Audi A4 Avant have?

The Audi A4 Avant is available as All-Wheel Drive or Front-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.