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Mercedes GLS vs Peugeot 508 comparison

Compare performance (404 HP vs 360 HP), boot space and price (92,700 £ vs 44,600 £ ) at a glance. Find out which car is the better choice for you – Mercedes GLS or Peugeot 508?

Mercedes GLS vs Peugeot 508: Key differences

Mercedes GLS

4.3 (1 Reviews)
rate
  • moderately more power
details

Peugeot 508

4.9 (2 Reviews)
rate
  • significantly cheaper
  • clearly more efficient
  • marginally quicker 0–100 km/h
  • considerably lighter
  • markedly more trunk space
details

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

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

GLS

Costs and Efficiency:

When it comes to price and running costs, the biggest differences usually appear. This is often where you see which car fits your budget better in the long run.

Peugeot 508 is significantly cheaper – starting at 44,600 £ , while the Mercedes GLS costs 92,700 £ . That’s a price difference of around 48,091 £.

Fuel consumption also shows a difference: the Peugeot 508 uses 1.6 L/100km and is clearly more efficient than the Mercedes GLS with 7.9 L/100km. The difference is about 6.3 L/100km.

508

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 Mercedes GLS offers moderately more power – delivering 404 HP compared to 360 HP. That’s roughly 44 HP more horsepower.

When accelerating from 0 to 100 km/h, the Peugeot 508 is marginally quicker – completing the sprint in 5.2 s, while the Mercedes GLS takes 5.6 s. That’s about 0.4 s quicker.

There’s also a difference in torque: the Mercedes GLS delivers markedly more torque with 750 Nm compared to 520 Nm. That’s about 230 Nm more.

GLS

Space and Everyday Use:

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

Seats: Mercedes GLS offers more seats – 7 vs 5.

In terms of curb weight, Peugeot 508 is considerably lighter – 1,811 kg compared to 2,580 kg. The difference is around 769 kg.

Looking at boot space, the Peugeot 508 offers markedly more boot space – 487 L compared to 355 L. That’s a difference of about 132 L.

When it comes to payload, the Mercedes GLS carries substantially more – 820 kg compared to 469 kg. That’s a difference of about 351 kg.

Who wins the race in the data check?

The Peugeot 508 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 £44,600
508

Peugeot 508

  • Engine Type Plug-in Hybrid
  • Transmission Automatic
  • Drive Type Front-Wheel Drive, All-Wheel Drive
  • Power HP 180 - 360 HP
  • Consumption L/100km 1.6 - 2 L/100km
  • Electric Range 46 - 55 km
details

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Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

Mercedes GLS

The GLS — usually just called the GLS — is Mercedes' flagship SUV, wrapping limousine-like comfort and commanding road presence into a smart, family-ready package. It pampers occupants with a hushed cabin, premium materials and intuitive tech, while still managing to feel confident and a little indulgent on the daily commute.

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Reviews Mercedes GLS

4.3 (1 Reviews)
rate

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

Peugeot 508

The Peugeot 508 turns heads with a low-slung, almost coupe-like silhouette and a cabin that feels grown-up and surprisingly premium for the money. On the road it balances comfort and poise with a playful edge, making it a convincing choice for buyers who want something stylish and sensible without shouting for attention.

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Reviews Peugeot 508

4.9 (2 Reviews)
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ANDRZEJ
21 Jan 2026, 14:22:12

I've had the 225 Hybrid GT for two years. Super car if you have, say, solar panels on the roof and charge from a socket — with a 10–15 km commute you drive on electricity for next to nothing. On the motorway at 140 km/h it uses about 6.0–6.3 l/100 km, superb comfort and quietness — and that stylish look!!!

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

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Peugeot 508

Costs and Consumption
Price
92,700 - 104,600 £
Price
44,600 - 60,800 £
Consumption L/100km
7.9 - 9.9 L/100km
Consumption L/100km
1.6 - 2 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
46 - 55 km
Battery Capacity
-
Battery Capacity
-
co2
206 - 226 g/km
co2
36 - 45 g/km
Fuel tank capacity
-
Fuel tank capacity
43 L

Dimensions and Body
Body Type
SUV
Body Type
Hatchback
Seats
7
Seats
5
Doors
-
Doors
5
Curb weight
2,580 - 2,670 kg
Curb weight
1,811 - 1,941 kg
Trunk capacity
355 L
Trunk capacity
487 L
Length
-
Length
4,750 mm
Width
1,956 mm
Width
1,859 mm
Height
-
Height
1,403 mm
Max trunk capacity
-
Max trunk capacity
1,537 L
Payload
810 - 820 kg
Payload
379 - 469 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel MHEV
Engine Type
Plug-in Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
All-Wheel Drive
Drive Type
Front-Wheel Drive, All-Wheel Drive
Power HP
336 - 404 HP
Power HP
180 - 360 HP
Acceleration 0-100km/h
5.6 - 6.2 s
Acceleration 0-100km/h
5.2 - 8.2 s
Max Speed
-
Max Speed
230 - 250 km/h
Torque
560 - 750 Nm
Torque
360 - 520 Nm
Number of Cylinders
6
Number of Cylinders
4
Power kW
247 - 297 kW
Power kW
133 - 265 kW
Engine capacity
2,989 - 2,999 cm3
Engine capacity
1,598 cm3

General
Model Year
2026
Model Year
2024
CO2 Efficiency Class
G
CO2 Efficiency Class
B
Brand
Mercedes-Benz
Brand
Peugeot
Is the Mercedes GLS offered with different drivetrains?

The Mercedes GLS 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.