@ Mercedes-Benz Group Media
@ Dr. Ing. h.c. F. Porsche AG
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Mercedes GLB vs Porsche Cayenne – Differences & prices compared

Both models have their strengths – but which one suits you more?
Compare performance, efficiency, price and space directly: Mercedes GLB or Porsche Cayenne?

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

GLB @ Mercedes-Benz Group Media

Costs and Efficiency:

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

Mercedes GLB has a decisively advantage in terms of price – it starts at 40500 £, while the Porsche Cayenne costs 87000 £. That’s a price difference of around 46491 £.

Fuel consumption also shows a difference: Porsche Cayenne manages with 4 L and is therefore noticeable more efficient than the Mercedes GLB with 5.60 L. The difference is about 1.60 L per 100 km.

Cayenne @ Dr. Ing. h.c. F. Porsche AG

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 Porsche Cayenne has a significantly edge – offering 739 HP compared to 320 HP. That’s roughly 419 HP more horsepower.

In acceleration from 0 to 100 km/h, the Porsche Cayenne is decisively quicker – completing the sprint in 3.60 s, while the Mercedes GLB takes 5.50 s. That’s about 1.90 s faster.

In terms of top speed, the Porsche Cayenne performs to a small extent better – reaching 305 km/h, while the Mercedes GLB tops out at 250 km/h. The difference is around 55 km/h.

There’s also a difference in torque: Porsche Cayenne pulls convincingly stronger with 950 Nm compared to 400 Nm. That’s about 550 Nm difference.

GLB @ Mercedes-Benz Group Media

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 curb weight, Mercedes GLB is clearly perceptible lighter – 1640 kg compared to 2130 kg. The difference is around 490 kg.

In terms of boot space, the Porsche Cayenne offers distinct more room – 772 L compared to 570 L. That’s a difference of about 202 L.

In maximum load capacity, the Mercedes GLB performs minimal better – up to 1805 L, which is about 97 L more than the Porsche Cayenne.

When it comes to payload, Porsche Cayenne clearly perceptible takes the win – 705 kg compared to 500 kg. That’s a difference of about 205 kg.

Who comes out on top?

Overall, the Porsche Cayenne shows itself to be outperforms in nearly all aspects and secures the title of DriveDuel Champion.
It convinces with the more balanced overall package and proves to be the more versatile choice for everyday use.

from about £87,000
Cayenne @ Dr. Ing. h.c. F. Porsche AG

Porsche Cayenne

  • Engine Type : Petrol, Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive
  • Power HP : 353 - 739 HP
  • Consumption L/100km : 4 - 12.2 L
  • Electric Range : 74 - 83 km
details

Mercedes GLB

The Mercedes GLB is a practical compact SUV that mixes boxy, family-friendly space with premium German polish, making it an appealing choice for buyers who want usefulness without pretension. It drives with a confident, composed feel and somehow manages to look both rugged and refined — the grown-up SUV that still likes to have fun.

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19C0853_015 @ Mercedes-Benz Group Media
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Porsche Cayenne

Few SUVs blend athletic poise and Teutonic precision like the Porsche Cayenne, putting genuine sports‑car feeling into a roomy, everyday package. If you want a practical family hauler that still makes you grin every time you merge, the Cayenne delivers — turning errands into an excuse for a spirited drive.

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P17_0701 @ Dr. Ing. h.c. F. Porsche AG
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GLB @ Mercedes-Benz Group Media
Cayenne @ Dr. Ing. h.c. F. Porsche AG

Costs and Consumption
Price
40500 - 65300 £
Price
87000 - 186400 £
Consumption L/100km
5.6 - 9 L
Consumption L/100km
4 - 12.2 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
-
Electric Range
74 - 83 km
Battery Capacity
-
Battery Capacity
21.80 kWh
co2
146 - 204 g/km
co2
90 - 277 g/km
Fuel tank capacity
52 - 60 L
Fuel tank capacity
70 - 90 L

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
4 - 5
Doors
5
Doors
5
Curb weight
1640 - 1820 kg
Curb weight
2130 - 2670 kg
Trunk capacity
565 - 570 L
Trunk capacity
434 - 772 L
Length
4634 - 4650 mm
Length
4930 mm
Width
1834 - 1850 mm
Width
1983 - 1989 mm
Height
1665 - 1692 mm
Height
1652 - 1698 mm
Max trunk capacity
1800 - 1805 L
Max trunk capacity
1344 - 1708 L
Payload
500 kg
Payload
365 - 705 kg

Engine and Performance
Engine Type
Petrol MHEV, Diesel
Engine Type
Petrol, Plugin Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Dual-Clutch Automatic
Transmission Detail
Automatic Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
116 - 320 HP
Power HP
353 - 739 HP
Acceleration 0-100km/h
5.5 - 11.5 s
Acceleration 0-100km/h
3.6 - 6 s
Max Speed
188 - 250 km/h
Max Speed
248 - 305 km/h
Torque
230 - 400 Nm
Torque
500 - 950 Nm
Number of Cylinders
4
Number of Cylinders
6 - 8
Power kW
85 - 235 kW
Power kW
260 - 544 kW
Engine capacity
1332 - 1991 cm3
Engine capacity
2995 - 3996 cm3

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
E, F, G
CO2 Efficiency Class
G, B, C
Brand
Mercedes-Benz
Brand
Porsche

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What drivetrain options does the Mercedes GLB have?

Available configurations include Front-Wheel Drive or All-Wheel Drive.

The prices and data displayed are estimates based on German list prices and may vary by country. This information is not legally binding.