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Mercedes SL Class vs Porsche Boxster comparison

Compare performance (816 HP vs 500 HP), boot space and price (112,700 £ vs 136,000 £ ) at a glance. Find out which car is the better choice for you – Mercedes SL Class or Porsche Boxster?

Mercedes SL Class vs Porsche Boxster: Key differences

Mercedes SL Class

  • visibly cheaper
  • clearly more power
  • considerably more efficient
  • a bit quicker 0–100 km/h

Porsche Boxster

  • markedly lighter

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

SL Class

Costs and Efficiency:

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

Mercedes SL Class is visibly cheaper – starting at 112,700 £ , while the Porsche Boxster costs 136,000 £ . That’s a price difference of around 23,324 £.

Fuel consumption also shows a difference: the Mercedes SL Class uses 9 L/100km and is considerably more efficient than the Porsche Boxster with 12.7 L/100km. The difference is about 3.7 L/100km.

Boxster

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 SL Class offers clearly more power – delivering 816 HP compared to 500 HP. That’s roughly 316 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes SL Class is a bit quicker – completing the sprint in 2.9 s, while the Porsche Boxster takes 3.4 s. That’s about 0.5 s quicker.

There’s also a difference in torque: the Mercedes SL Class delivers clearly more torque with 1,420 Nm compared to 450 Nm. That’s about 970 Nm more.

SL 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 SL Class offers more seats – 4 vs 2.

In terms of curb weight, Porsche Boxster is markedly lighter – 1,485 kg compared to 1,810 kg. The difference is around 325 kg.

When it comes to payload, the Mercedes SL Class carries visibly more – 375 kg compared to 270 kg. That’s a difference of about 105 kg.

Who wins the race in the data check?

The Mercedes SL Class holds a decisive overall lead 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 £112,700
SL Class

Mercedes SL Class

  • Engine Type : Petrol MHEV, Petrol, Plugin Hybrid
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 381 - 816 HP
  • Consumption L/100km : 9 - 13.6 L/100km
  • Electric Range : 12 km
details

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Mercedes SL Class
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View detailed analysis

Engine and Performance
View detailed analysis

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View detailed analysis

Mercedes SL Class

The Mercedes SL blends timeless elegance with a cheeky sense of occasion, its retractable roof turning any commute into a small celebratory parade. Behind the wheel it behaves like a grown-up sports car that prefers comfort and presence over headline-grabbing bravado, making it a tempting choice for buyers who want to arrive in style.

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15C1119_120
15C1119_004

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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 SL Class
Porsche Boxster

Costs and Consumption
Price
112,700 - 219,300 £
Price
136,000 £
Consumption L/100km
9 - 13.6 L/100km
Consumption L/100km
12.7 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
12 km
Electric Range
-
Battery Capacity
-
Battery Capacity
-
co2
206 - 309 g/km
co2
288 g/km
Fuel tank capacity
-
Fuel tank capacity
54 L

Dimensions and Body
Body Type
Roadster
Body Type
Roadster
Seats
4
Seats
2
Doors
-
Doors
2
Curb weight
1,810 - 2,195 kg
Curb weight
1,485 kg
Trunk capacity
-
Trunk capacity
122 L
Length
-
Length
4,418 mm
Width
1,915 mm
Width
1,822 mm
Height
-
Height
1,252 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
145 - 375 kg
Payload
270 kg

Engine and Performance
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid
Engine Type
Petrol
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive
Power HP
381 - 816 HP
Power HP
500 HP
Acceleration 0-100km/h
2.9 - 4.9 s
Acceleration 0-100km/h
3.4 s
Max Speed
-
Max Speed
308 km/h
Torque
480 - 1,420 Nm
Torque
450 Nm
Number of Cylinders
4 - 8
Number of Cylinders
6
Power kW
280 - 600 kW
Power kW
368 kW
Engine capacity
1,991 - 3,982 cm3
Engine capacity
3,996 cm3

General
Model Year
2,025
Model Year
2,023
CO2 Efficiency Class
G
CO2 Efficiency Class
G
Brand
Mercedes-Benz
Brand
Porsche
What drive types are available for the Mercedes SL Class?

The Mercedes SL Class is offered with Rear-Wheel Drive or 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.