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Mercedes S-Class vs Porsche Boxster comparison

Compare performance (635 HP vs 500 HP), boot space and price (104,000 £ vs 136,000 £ ) at a glance. Find out which car is the better choice for you – Mercedes S-Class or Porsche Boxster?

Mercedes S-Class vs Porsche Boxster: Key differences

Mercedes S-Class

  • noticeably cheaper
  • clearly more power
  • substantially more efficient
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Porsche Boxster

  • a bit quicker 0–100 km/h
  • substantially lighter
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By Achim Sedelmaier

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

S-Class

Costs and Efficiency:

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

Mercedes S-Class is noticeably cheaper – starting at 104,000 £ , while the Porsche Boxster costs 136,000 £ . That’s a price difference of around 32,009 £.

Fuel consumption also shows a difference: the Mercedes S-Class uses 2.2 L/100km and is substantially more efficient than the Porsche Boxster with 12.7 L/100km. The difference is about 10.5 L/100km.

Boxster

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 Mercedes S-Class offers clearly more power – delivering 635 HP compared to 500 HP. That’s roughly 135 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Boxster is a bit quicker – completing the sprint in 3.4 s, while the Mercedes S-Class takes 4 s. That’s about 0.6 s quicker.

There’s also a difference in torque: the Mercedes S-Class delivers significantly more torque with 850 Nm compared to 450 Nm. That’s about 400 Nm more.

S-Class

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Seats: Mercedes S-Class offers more seats – 5 vs 2.

In terms of curb weight, Porsche Boxster is substantially lighter – 1,485 kg compared to 2,165 kg. The difference is around 680 kg.

When it comes to payload, the Mercedes S-Class carries significantly more – 660 kg compared to 270 kg. That’s a difference of about 390 kg.

Who wins the race in the data check?

The Mercedes S-Class 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 £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
Mercedes S-Class
Porsche Boxster

Costs and Consumption

View detailed analysis

Engine and Performance

View detailed analysis

Dimensions and Body

View detailed analysis

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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Porsche Boxster

The Porsche Boxster epitomizes the essence of a pure, open-top driving experience with its mid-engine roadster design. Known for its agile handling and dynamic performance, the Boxster seamlessly blends luxury with thrilling precision on the road. Its unmistakable styling and superior engineering continue to captivate automotive enthusiasts who crave a visceral connection to the art of driving.

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Mercedes S-Class
Porsche Boxster

Costs and Consumption

Price
104,000 - 201,400 £
Price
136,000 £
Consumption L/100km
2.2 - 11 L/100km
Consumption L/100km
12.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
98 - 118 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
50 - 252 g/km
co2
288 g/km
Fuel tank capacity
-
Fuel tank capacity
54 L

Dimensions and Body

Body Type
Sedan
Body Type
Roadster
Seats
5
Seats
2
Doors
-
Doors
2
Curb weight
2,165 - 2,650 kg
Curb weight
1,485 kg
Trunk capacity
-
Trunk capacity
122 L
Length
-
Length
4,418 mm
Width
1,921 mm
Width
1,822 mm
Height
-
Height
1,252 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
420 - 660 kg
Payload
270 kg

Engine and Performance

Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Engine Type
Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
336 - 635 HP
Power HP
500 HP
Acceleration 0-100km/h
4 - 5.7 s
Acceleration 0-100km/h
3.4 s
Max Speed
-
Max Speed
308 km/h
Torque
560 - 850 Nm
Torque
450 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6
Power kW
247 - 467 kW
Power kW
368 kW
Engine capacity
2,989 - 3,982 cm3
Engine capacity
3,996 cm3

General

Model Year
2026
Model Year
2023
CO2 Efficiency Class
G, B, F
CO2 Efficiency Class
G
Brand
Mercedes-Benz
Brand
Porsche
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.