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Audi A6 e-tron Avant vs Mercedes CLA Coupe comparison

Compare performance (551 HP vs 354 HP), boot space and price (55,200 £ vs 39,600 £ ) at a glance. Find out which car is the better choice for you – Audi A6 e-tron Avant or Mercedes CLA Coupe?

Audi A6 e-tron Avant vs Mercedes CLA Coupe: Key differences

Audi A6 e-tron Avant

3.4 (3 Reviews)
rate
  • markedly more power
  • markedly quicker 0–100 km/h
  • somewhat more trunk space
details

Mercedes CLA Coupe

4.8 (2 Reviews)
rate
  • noticeably cheaper
  • visibly more efficient
  • barely more electric range
  • clearly 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 e-tron 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 CLA Coupe is noticeably cheaper – starting at 39,600 £ , while the Audi A6 e-tron Avant costs 55,200 £ . That’s a price difference of around 15,606 £.

In terms of energy consumption, the Mercedes CLA Coupe is visibly more efficient: consuming 12.2 kWh/100km compared to 14.8 kWh/100km for the Audi A6 e-tron Avant. That’s a difference of about 2.6 kWh/100km.

As for electric range, the Mercedes CLA Coupe offers barely more range – reaching up to 791 km, about 75 km more than the Audi A6 e-tron Avant.

CLA Coupe

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 e-tron Avant offers markedly more power – delivering 551 HP compared to 354 HP. That’s roughly 197 HP more horsepower.

When accelerating from 0 to 100 km/h, the Audi A6 e-tron Avant is markedly quicker – completing the sprint in 3.9 s, while the Mercedes CLA Coupe takes 4.9 s. That’s about 1 s quicker.

Looking at top speed, the Audi A6 e-tron Avant is slightly faster – reaching 240 km/h, while the Mercedes CLA Coupe tops out at 210 km/h. The difference is around 30 km/h.

There’s also a difference in torque: the Audi A6 e-tron Avant delivers noticeably more torque with 855 Nm compared to 515 Nm. That’s about 340 Nm more.

A6 e-tron 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 CLA Coupe is clearly lighter – 1,695 kg compared to 2,185 kg. The difference is around 490 kg.

Looking at boot space, the Audi A6 e-tron Avant offers somewhat more boot space – 502 L compared to 405 L. That’s a difference of about 97 L.

When it comes to payload, the Audi A6 e-tron Avant carries barely more – 500 kg compared to 455 kg. That’s a difference of about 45 kg.

Who wins the race in the data check?

The Audi A6 e-tron Avant stands well ahead of its rival 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 £55,200
A6 e-tron Avant

Audi A6 e-tron Avant

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 326 - 551 HP
  • Consumption kWh/100km : 14.8 - 17 kWh/100km
  • Electric Range : 539 - 716 km
details

Frequently compared as well

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Audi A6 e-tron Avant
BMW iX3
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Audi A6 e-tron Avant
Mercedes CLA Coupe

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi A6 e-tron Avant

The Audi A6 e-tron Avant wraps Audi's trademark refinement into a sleek electric estate that looks at home in the city or on the open road. Inside it's grown-up and tech-forward with practical packaging for family life, delivering a composed, confident drive that makes everyday hauling feel a bit more special and slightly futuristic.

details
A243176_medium
A243167_medium
A243148_medium

Reviews Audi A6 e-tron Avant

3.4 (3 Reviews)
rate

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

Mercedes CLA Coupe

The Mercedes CLA Coupe cuts a rakish silhouette that blends sporty coupe lines with everyday practicality, giving style-minded buyers a premium image without shouting. Inside it feels more luxurious than its size suggests, with a slick cabin, intuitive tech and a composed ride — the kind of car that parties in the city and still shows up polished on Sunday morning.

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19C0225_069
19C0225_068
19C0225_067
19C0225_044

Reviews Mercedes CLA Coupe

4.8 (2 Reviews)
rate
marco
12 Mar 2026, 18:44:45

A car with a unique line — the shooting brake finally gets a sporty rear and a roomy trunk.

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
Dejf
18 Dec 2025, 14:59:40

Nice efficient car. Like it

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 e-tron Avant
Mercedes CLA Coupe

Costs and Consumption
Price
55,200 - 100,100 £
Price
39,600 - 59,300 £
Consumption L/100km
-
Consumption L/100km
4.9 - 5.3 L/100km
Consumption kWh/100km
14.8 - 17 kWh/100km
Consumption kWh/100km
12.2 - 12.6 kWh/100km
Electric Range
539 - 716 km
Electric Range
541 - 791 km
Battery Capacity
75.8 - 94.9 kWh
Battery Capacity
58 kWh
co2
0 g/km
co2
0 - 120 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Estate
Body Type
Coupe
Seats
5
Seats
5
Doors
5
Doors
4
Curb weight
2,185 - 2,410 kg
Curb weight
1,695 - 2,135 kg
Trunk capacity
502 L
Trunk capacity
405 L
Length
4,928 mm
Length
4,723 mm
Width
1,923 mm
Width
1,855 mm
Height
1,504 - 1,527 mm
Height
1,468 mm
Max trunk capacity
1,422 L
Max trunk capacity
-
Payload
470 - 500 kg
Payload
430 - 455 kg

Engine and Performance
Engine Type
Electric
Engine Type
Electric, Petrol MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Reduction Gearbox, Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive, Front-Wheel Drive
Power HP
326 - 551 HP
Power HP
156 - 354 HP
Acceleration 0-100km/h
3.9 - 6 s
Acceleration 0-100km/h
4.9 - 8.8 s
Max Speed
210 - 240 km/h
Max Speed
210 km/h
Torque
435 - 855 Nm
Torque
280 - 515 Nm
Number of Cylinders
-
Number of Cylinders
4
Power kW
240 - 405 kW
Power kW
115 - 260 kW
Engine capacity
-
Engine capacity
1,499 cm3

General
Model Year
2024
Model Year
2,025 - 2,026
CO2 Efficiency Class
A
CO2 Efficiency Class
A, C, D
Brand
Audi
Brand
Mercedes-Benz
What drivetrain options does the Audi A6 e-tron Avant have?

The Audi A6 e-tron Avant is available as Rear-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.