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BMW 5 Series Saloon vs Mercedes S-Class comparison

Compare performance (727 HP vs 635 HP), boot space and price (51,400 £ vs 104,000 £ ) at a glance. Find out which car is the better choice for you – BMW 5 Series Saloon or Mercedes S-Class?

BMW 5 Series Saloon vs Mercedes S-Class: Key differences

BMW 5 Series Saloon

  • significantly cheaper
  • slightly more power
  • marginally more efficient
  • moderately quicker 0–100 km/h
  • markedly lighter
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Mercedes S-Class

  • a bit more electric range
  • barely more trunk space
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By Achim Sedelmaier

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

5 Series Saloon

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.

BMW 5 Series Saloon is significantly cheaper – starting at 51,400 £ , while the Mercedes S-Class costs 104,000 £ . That’s a price difference of around 52,591 £.

Fuel consumption also shows a difference: the BMW 5 Series Saloon uses 2.1 L/100km and is marginally more efficient than the Mercedes S-Class with 2.2 L/100km. The difference is about 0.1 L/100km.

As for electric range, the Mercedes S-Class offers a bit more range – reaching up to 118 km, about 13 km more than the BMW 5 Series Saloon.

S-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 BMW 5 Series Saloon offers slightly more power – delivering 727 HP compared to 635 HP. That’s roughly 92 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW 5 Series Saloon is moderately quicker – completing the sprint in 3.5 s, while the Mercedes S-Class takes 4 s. That’s about 0.5 s quicker.

There’s also a difference in torque: the BMW 5 Series Saloon delivers somewhat more torque with 1,000 Nm compared to 850 Nm. That’s about 150 Nm more.

5 Series Saloon

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, BMW 5 Series Saloon is markedly lighter – 1,800 kg compared to 2,165 kg. The difference is around 365 kg.

Looking at boot space, the Mercedes S-Class offers barely more boot space – 530 L compared to 520 L. That’s a difference of about 10 L.

When it comes to payload, the Mercedes S-Class carries only slightly more – 660 kg compared to 600 kg. That’s a difference of about 60 kg.

Who wins the race in the data check?

The BMW 5 Series Saloon is decisively ahead 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 £51,400
5 Series Saloon

BMW 5 Series Saloon

  • Engine Type Diesel MHEV, Petrol MHEV, Plugin Hybrid
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 197 - 727 HP
  • Consumption L/100km 2.1 - 5.8 L/100km
  • Electric Range 67 - 105 km
BMW 5 Series Saloon
Mercedes S-Class

Costs and Consumption

View detailed analysis

Engine and Performance

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Dimensions and Body

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BMW 5 Series Saloon

The BMW 5 Series Saloon blends executive poise with a driver's instinct, delivering a supple, refined cabin and a chassis that prefers composed authority over bravado. For buyers who want a grown-up commuter that still enjoys a twisty road, it’s the kind of car that keeps your colleagues impressed and your weekend grin intact.

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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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BMW 5 Series Saloon
Mercedes S-Class

Costs and Consumption

Price
51,400 - 124,500 £
Price
104,000 - 201,400 £
Consumption L/100km
2.1 - 5.8 L/100km
Consumption L/100km
2.2 - 11 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
67 - 105 km
Electric Range
98 - 118 km
Battery Capacity
-
Battery Capacity
-
co2
48 - 152 g/km
co2
50 - 252 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body

Body Type
Sedan
Body Type
Sedan
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
1,800 - 2,515 kg
Curb weight
2,165 - 2,650 kg
Trunk capacity
466 - 520 L
Trunk capacity
345 - 530 L
Length
-
Length
-
Width
1,900 - 1,970 mm
Width
1,921 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
425 - 600 kg
Payload
420 - 660 kg

Engine and Performance

Engine Type
Diesel MHEV, Petrol MHEV, Plugin Hybrid
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Automatic Gearbox
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Power HP
197 - 727 HP
Power HP
336 - 635 HP
Acceleration 0-100km/h
3.5 - 7.5 s
Acceleration 0-100km/h
4 - 5.7 s
Max Speed
-
Max Speed
-
Torque
330 - 1,000 Nm
Torque
560 - 850 Nm
Number of Cylinders
4 - 8
Number of Cylinders
6 - 8
Power kW
145 - 535 kW
Power kW
247 - 467 kW
Engine capacity
1,995 - 4,395 cm3
Engine capacity
2,989 - 3,982 cm3

General

Model Year
2,023 - 2,026
Model Year
2026
CO2 Efficiency Class
D, E, B, C
CO2 Efficiency Class
G, B, F
Brand
BMW
Brand
Mercedes-Benz
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.