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Mercedes S-Class vs Porsche Panamera comparison

Compare performance (635 HP vs 782 HP), boot space and price (104,000 £ vs 99,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes S-Class or Porsche Panamera?

Mercedes S-Class vs Porsche Panamera: Key differences

Mercedes S-Class

  • visibly more efficient
  • moderately more electric range
  • marginally more trunk space
details

Porsche Panamera

  • very slightly cheaper
  • slightly more power
  • clearly quicker 0–100 km/h
  • a bit lighter
details

By Achim Sedelmaier

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

S-Class

Costs and Efficiency:

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

Porsche Panamera is very slightly cheaper – starting at 99,800 £ , while the Mercedes S-Class costs 104,000 £ . That’s a price difference of around 4,248 £.

Fuel consumption also shows a difference: the Mercedes S-Class uses 2.2 L/100km and is visibly more efficient than the Porsche Panamera with 3 L/100km. The difference is about 0.8 L/100km.

As for electric range, the Mercedes S-Class offers moderately more range – reaching up to 118 km, about 21 km more than the Porsche Panamera.

Panamera

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 Porsche Panamera offers slightly more power – delivering 782 HP compared to 635 HP. That’s roughly 147 HP more horsepower.

When accelerating from 0 to 100 km/h, the Porsche Panamera is clearly quicker – completing the sprint in 2.9 s, while the Mercedes S-Class takes 4 s. That’s about 1.1 s quicker.

There’s also a difference in torque: the Porsche Panamera delivers slightly more torque with 1,000 Nm compared to 850 Nm. That’s about 150 Nm more.

S-Class

Space and Everyday Use:

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

Seats: Mercedes S-Class offers more seats – 5 vs 4.

In terms of curb weight, Porsche Panamera is a bit lighter – 1,960 kg compared to 2,165 kg. The difference is around 205 kg.

Looking at boot space, the Mercedes S-Class offers marginally more boot space – 530 L compared to 494 L. That’s a difference of about 36 L.

When it comes to payload, the Mercedes S-Class carries somewhat more – 660 kg compared to 545 kg. That’s a difference of about 115 kg.

Who wins the race in the data check?

The Mercedes S-Class holds a narrow 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 £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
details

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Mercedes S-Class
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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 Panamera

The Porsche Panamera blends sports-car sharpness with luxury-sedan refinement, serving driving thrills up front while pampering passengers in the back. Poised, polished and mischievously quick, it’s the car for buyers who want exotic performance without losing everyday comfort.

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Mercedes S-Class
Porsche Panamera

Costs and Consumption
Price
104,000 - 201,400 £
Price
99,800 - 212,100 £
Consumption L/100km
2.2 - 11 L/100km
Consumption L/100km
3 - 12 L/100km
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
98 - 118 km
Electric Range
83 - 97 km
Battery Capacity
-
Battery Capacity
21.8 kWh
co2
50 - 252 g/km
co2
69 - 274 g/km
Fuel tank capacity
-
Fuel tank capacity
75 - 90 L

Dimensions and Body
Body Type
Sedan
Body Type
Hatchback
Seats
5
Seats
4
Doors
-
Doors
5
Curb weight
2,165 - 2,650 kg
Curb weight
1,960 - 2,535 kg
Trunk capacity
345 - 530 L
Trunk capacity
421 - 494 L
Length
-
Length
5,052 - 5,204 mm
Width
1,921 mm
Width
1,937 mm
Height
-
Height
1,415 - 1,428 mm
Max trunk capacity
-
Max trunk capacity
1,255 - 1,385 L
Payload
420 - 660 kg
Payload
340 - 545 kg

Engine and Performance
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Engine Type
Petrol, Plugin Hybrid
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, All-Wheel Drive
Power HP
336 - 635 HP
Power HP
353 - 782 HP
Acceleration 0-100km/h
4 - 5.7 s
Acceleration 0-100km/h
2.9 - 5.3 s
Max Speed
-
Max Speed
270 - 325 km/h
Torque
560 - 850 Nm
Torque
500 - 1,000 Nm
Number of Cylinders
6 - 8
Number of Cylinders
6 - 8
Power kW
247 - 467 kW
Power kW
260 - 575 kW
Engine capacity
2,989 - 3,982 cm3
Engine capacity
2,894 - 3,996 cm3

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
G, B, F
CO2 Efficiency Class
G, B, C
Brand
Mercedes-Benz
Brand
Porsche
Is the Mercedes S-Class offered with different drivetrains?

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