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Audi Q7 vs Mercedes S-Class comparison

Compare performance (507 HP vs 635 HP), boot space and price (70,600 £ vs 104,000 £ ) at a glance. Find out which car is the better choice for you – Audi Q7 or Mercedes S-Class?

Audi Q7 vs Mercedes S-Class: Key differences

Audi Q7

4.5 (2 Reviews)
rate
  • clearly cheaper
  • very slightly lighter
  • substantially more trunk space
details

Mercedes S-Class

  • markedly more power
  • substantially more efficient
  • noticeably more electric range
  • only slightly quicker 0–100 km/h
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

Q7

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

Audi Q7 is clearly cheaper – starting at 70,600 £ , while the Mercedes S-Class costs 104,000 £ . That’s a price difference of around 33,391 £.

Fuel consumption also shows a difference: the Mercedes S-Class uses 2.2 L/100km and is substantially more efficient than the Audi Q7 with 3.8 L/100km. The difference is about 1.6 L/100km.

As for electric range, the Mercedes S-Class offers noticeably more range – reaching up to 118 km, about 36 km more than the Audi Q7.

S-Class

Engine and Performance:

Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.

When it comes to engine power, the Mercedes S-Class offers markedly more power – delivering 635 HP compared to 507 HP. That’s roughly 128 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes S-Class is only slightly quicker – completing the sprint in 4 s, while the Audi Q7 takes 4.1 s. That’s about 0.1 s quicker.

There’s also a difference in torque: the Mercedes S-Class delivers only slightly more torque with 850 Nm compared to 770 Nm. That’s about 80 Nm more.

Q7

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.

Seats: Audi Q7 offers more seats – 7 vs 5.

In terms of curb weight, Audi Q7 is very slightly lighter – 2,055 kg compared to 2,165 kg. The difference is around 110 kg.

Looking at boot space, the Audi Q7 offers substantially more boot space – 887 L compared to 530 L. That’s a difference of about 357 L.

When it comes to payload, the Audi Q7 carries noticeably more – 885 kg compared to 660 kg. That’s a difference of about 225 kg.

Who wins the race in the data check?

The Mercedes S-Class is clearly superior 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 £104,000
S-Class

Mercedes S-Class

  • Engine Type Petrol MHEV, Plugin Hybrid, Diesel MHEV
  • Transmission Automatic
  • Drive Type All-Wheel Drive, Rear-Wheel Drive
  • Power HP 336 - 635 HP
  • Consumption L/100km 2.2 - 11 L/100km
  • Electric Range 98 - 118 km
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Audi Q7
Mercedes S-Class

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Audi Q7

The Audi Q7 cuts an imposing figure on the road, balancing restrained luxury with a spacious, tech-rich cabin that makes long journeys feel effortless. It rides with confident composure and polished manners, so if you want a premium family SUV that feels grown-up and worth the badge, the Q7 is a persuasive choice — even the in-laws will be impressed.

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Reviews Audi Q7

4.5 (2 Reviews)
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A.B.
24 Mar 2026, 11:45:19

Constant faults with the touch door opening, the trunk, sign-reading and the front obstacle sensors. The service repaired it under warranty five times — they replaced wiring harnesses, a sensor, uploaded software — and then gave up. They told me they don’t know what else to do. That’s the customer care at a German premium brand. A car worth over 400,000 and they tell the customer they don’t know what to do. I paid the final installment and I’m giving the car back to them. I’m taking a Chinese BYD Seal U DM-i plug-in hybrid with better equipment for 165k after a discount from 225k. With that attitude to customers and those high prices, the Germans will have fewer and fewer people interested in their cars — but they’ve only got themselves to blame!!!

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

Mercedes S-Class

The Mercedes S-Class wraps peerless comfort, whisper-quiet luxury and subtle tech wizardry into a chauffeur-ready package that still knows how to engage the driver. It’s the car for buyers who want to arrive relaxed, be taken seriously and occasionally enjoy a grin when the road reminds them this limousine can dance.

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Reviews Mercedes S-Class

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Audi Q7
Mercedes S-Class

Costs and Consumption
Price
70,600 - 100,600 £
Price
104,000 - 201,400 £
Consumption L/100km
3.8 - 11.9 L/100km
Consumption L/100km
2.2 - 11 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
81 - 82 km
Electric Range
98 - 118 km
Battery Capacity
-
Battery Capacity
-
co2
86 - 271 g/km
co2
50 - 252 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
Sedan
Seats
5 - 7
Seats
5
Doors
-
Doors
-
Curb weight
2,055 - 2,460 kg
Curb weight
2,165 - 2,650 kg
Trunk capacity
563 - 887 L
Trunk capacity
345 - 530 L
Length
-
Length
-
Width
1,970 mm
Width
1,921 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
640 - 885 kg
Payload
420 - 660 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV, Petrol, Plugin Hybrid
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Power HP
231 - 507 HP
Power HP
336 - 635 HP
Acceleration 0-100km/h
4.1 - 7.1 s
Acceleration 0-100km/h
4 - 5.7 s
Max Speed
-
Max Speed
-
Torque
500 - 770 Nm
Torque
560 - 850 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6 - 8
Power kW
170 - 373 kW
Power kW
247 - 467 kW
Engine capacity
2,967 - 3,996 cm3
Engine capacity
2,989 - 3,982 cm3

General
Model Year
2025
Model Year
2026
CO2 Efficiency Class
G, B
CO2 Efficiency Class
G, B, F
Brand
Audi
Brand
Mercedes-Benz
Is the Audi Q7 offered with different drivetrains?

The Audi Q7 is available as 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.