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Mercedes S Class vs Porsche 911 Convertible - Differences and prices compared

Compare performance (802 HP vs 711 HP), boot space and price (97200 £ vs 122400 £ ) at a glance. Find out which car is the better choice for you – Mercedes S Class or Porsche 911 Convertible?

Mercedes S Class

Porsche 911 Convertible

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

S Class

Costs and Efficiency:

Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.

Mercedes S Class has a distinct advantage in terms of price – it starts at 97200 £ , while the Porsche 911 Convertible costs 122400 £ . That’s a price difference of around 25230 £.

Fuel consumption also shows a difference: Mercedes S Class manages with 2.30 L and is therefore significantly more efficient than the Porsche 911 Convertible with 10.30 L. The difference is about 8 L per 100 km.

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 Mercedes S Class has a somewhat edge – offering 802 HP compared to 711 HP. That’s roughly 91 HP more horsepower.

In acceleration from 0 to 100 km/h, the Porsche 911 Convertible is clearly perceptible quicker – completing the sprint in 2.60 s, while the Mercedes S Class takes 3.30 s. That’s about 0.70 s faster.

In terms of top speed, the Porsche 911 Convertible performs noticeable better – reaching 322 km/h, while the Mercedes S Class tops out at 250 km/h. The difference is around 72 km/h.

There’s also a difference in torque: Mercedes S Class pulls decisively stronger with 1430 Nm compared to 800 Nm. That’s about 630 Nm difference.

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 somewhat more seating capacity – 5 vs 4.

In curb weight, Porsche 911 Convertible is distinct lighter – 1655 kg compared to 2070 kg. The difference is around 415 kg.

In terms of boot space, the Mercedes S Class offers clearly more room – 550 L compared to 163 L. That’s a difference of about 387 L.

When it comes to payload, Mercedes S Class convincingly takes the win – 730 kg compared to 345 kg. That’s a difference of about 385 kg.

Who wins the race in the data check?

The Mercedes S Class 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.

Mercedes S Class
Porsche 911 Convertible

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis
from about £97,200
S Class

Mercedes S Class

  • Engine Type : Petrol MHEV, Petrol, Plugin Hybrid, Diesel MHEV
  • Transmission : Automatic
  • Drive Type : All-Wheel Drive, Rear-Wheel Drive
  • Power HP : 336 - 802 HP
  • Consumption L/100km : 2.3 - 13.2 L
  • Electric Range : 31 - 117 km
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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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21C0428_004
21C0613_021
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Porsche 911 Convertible

The Porsche 911 Cabriolet transforms the iconic silhouette into an open‑air weapon, offering roof-down glamour and razor-sharp handling that still feels perfectly composed on normal roads. It’s the kind of car that serves daily duties with surprising ease while delivering intoxicating engine music and a grin factor that makes every trip feel like a small victory.

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Reviews Mercedes S Class

Reviews Porsche 911 Convertible

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Porsche 911 Convertible

Costs and Consumption
Price
97200 - 204400 £
Price
122400 - 244500 £
Consumption L/100km
2.3 - 13.2 L
Consumption L/100km
10.3 - 11.7 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
31 - 117 km
Electric Range
-
Battery Capacity
10.40 kWh
Battery Capacity
-
co2
52 - 301 g/km
co2
234 - 265 g/km
Fuel tank capacity
65 - 76 L
Fuel tank capacity
63 L

Dimensions and Body
Body Type
Sedan
Body Type
Convertible
Seats
5
Seats
4
Doors
4
Doors
2
Curb weight
2070 - 2650 kg
Curb weight
1655 - 1900 kg
Trunk capacity
325 - 550 L
Trunk capacity
163 L
Length
5179 - 5469 mm
Length
4542 - 4553 mm
Width
1921 - 1954 mm
Width
1852 - 1900 mm
Height
1503 - 1515 mm
Height
1292 - 1298 mm
Max trunk capacity
-
Max trunk capacity
-
Payload
420 - 730 kg
Payload
275 - 345 kg

Engine and Performance
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid, Diesel MHEV
Engine Type
Petrol, Full Hybrid
Transmission
Automatic
Transmission
Automatic, Manuel
Transmission Detail
Automatic Gearbox
Transmission Detail
Dual-Clutch Automatic, Manual Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
336 - 802 HP
Power HP
394 - 711 HP
Acceleration 0-100km/h
3.3 - 5.9 s
Acceleration 0-100km/h
2.6 - 4.7 s
Max Speed
250 km/h
Max Speed
291 - 322 km/h
Torque
500 - 1430 Nm
Torque
450 - 800 Nm
Number of Cylinders
6 - 12
Number of Cylinders
6
Power kW
247 - 590 kW
Power kW
290 - 523 kW
Engine capacity
2989 - 5980 cm3
Engine capacity
2981 - 3591 cm3

General
Model Year
2024 - 2025
Model Year
2024 - 2026
CO2 Efficiency Class
G, E, F, B
CO2 Efficiency Class
G
Brand
Mercedes-Benz
Brand
Porsche

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What drive types are available for the Mercedes S Class?

The Mercedes S Class is available as All-Wheel Drive or Rear-Wheel Drive.

The prices shown are estimates based on German list prices, adjusted for local VAT. Local registration taxes (e.g. NoVA, BPM or CO2 malus) are not included. This information is not legally binding.