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Porsche Panamera vs Mercedes S Class comparison

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

Porsche Panamera vs Mercedes S Class: Key differences

Porsche Panamera

  • only slightly cheaper
  • slightly more power
  • visibly quicker 0–100 km/h
  • somewhat lighter
details

Mercedes S Class

  • markedly more efficient
  • a bit more electric range
details

By Achim Sedelmaier

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

Panamera

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 only 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 markedly 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 a bit more range – reaching up to 118 km, about 21 km more than the Porsche Panamera.

S Class

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 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 visibly 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.

Panamera

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 somewhat lighter – 1,960 kg compared to 2,165 kg. The difference is around 205 kg.

When it comes to payload, the Mercedes S Class carries a bit 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 is slightly 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 £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
Porsche Panamera
Mercedes S Class

Costs and Consumption

View detailed analysis

Engine and Performance

View detailed analysis

Dimensions and Body

View detailed analysis

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.

details

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.

details
Porsche Panamera
Mercedes S Class

Costs and Consumption

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

Dimensions and Body

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

Engine and Performance

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

General

Model Year
2025
Model Year
2026
CO2 Efficiency Class
G, B, C
CO2 Efficiency Class
G, B, F
Brand
Porsche
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.