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Mercedes S-Class vs Cadillac OPTIQ comparison

Compare performance (635 HP vs 304 HP), boot space and price (104,000 £ vs 55,700 £ ) at a glance. Find out which car is the better choice for you – Mercedes S-Class or Cadillac OPTIQ?

Mercedes S-Class vs Cadillac OPTIQ: Key differences

Mercedes S-Class

  • significantly more power
  • clearly quicker 0–100 km/h
  • marginally lighter
  • somewhat more trunk space
details

Cadillac OPTIQ

3.7 (1 Reviews)
rate
  • clearly cheaper
  • considerably more electric range
details

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.

Cadillac OPTIQ is clearly cheaper – starting at 55,700 £ , while the Mercedes S-Class costs 104,000 £ . That’s a price difference of around 48,305 £.

As for electric range, the Cadillac OPTIQ offers considerably more range – reaching up to 425 km, about 307 km more than the Mercedes S-Class.

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 offers significantly more power – delivering 635 HP compared to 304 HP. That’s roughly 331 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes S-Class is clearly quicker – completing the sprint in 4 s, while the Cadillac OPTIQ takes 6.3 s. That’s about 2.3 s quicker.

There’s also a difference in torque: the Mercedes S-Class delivers substantially more torque with 850 Nm compared to 480 Nm. That’s about 370 Nm more.

S-Class

Space and Everyday Use:

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

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes S-Class is marginally lighter – 2,165 kg compared to 2,376 kg. The difference is around 211 kg.

Looking at boot space, the Mercedes S-Class offers somewhat more boot space – 530 L compared to 443 L. That’s a difference of about 87 L.

When it comes to payload, the Mercedes S-Class carries clearly more – 660 kg compared to 524 kg. That’s a difference of about 136 kg.

Who wins the race in the data check?

The Cadillac OPTIQ sits just ahead overall 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.

£55,714
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Cadillac OPTIQ

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type All-Wheel Drive
  • Power HP 304 HP
  • Consumption kWh/100km 19.9 kWh/100km
  • Electric Range 425 km
details

Frequently compared as well

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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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21C0428_004
21C0613_021
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Reviews Mercedes S-Class

No reviews yet. Share your experience and help others decide.

Cadillac OPTIQ

The Cadillac Optiq is a chic, compact electric SUV that brings the brand’s bold styling, hushed refinement, and confident punch to a more attainable size. With a calm, composed ride, a tech-rich cabin, and the brand’s signature light show outside, it feels like an urban-friendly gateway to true American luxury without losing the drama or the practicality buyers need.

details

Reviews Cadillac OPTIQ

3.7 (1 Reviews)
rate

No reviews yet. Share your experience and help others decide.

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Cadillac OPTIQ

Costs and Consumption
Price
104,000 - 201,400 £
Price
55,700 £
Consumption L/100km
2.2 - 11 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
19.9 kWh/100km
Electric Range
98 - 118 km
Electric Range
425 km
Battery Capacity
-
Battery Capacity
-
co2
50 - 252 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Sedan
Body Type
SUV
Seats
5
Seats
5
Doors
-
Doors
-
Curb weight
2,165 - 2,650 kg
Curb weight
2,376 kg
Trunk capacity
345 - 530 L
Trunk capacity
443 L
Length
-
Length
-
Width
1,921 mm
Width
1,912 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
420 - 660 kg
Payload
524 kg

Engine and Performance
Engine Type
Petrol MHEV, Plugin Hybrid, Diesel MHEV
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatic Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
All-Wheel Drive, Rear-Wheel Drive
Drive Type
All-Wheel Drive
Power HP
336 - 635 HP
Power HP
304 HP
Acceleration 0-100km/h
4 - 5.7 s
Acceleration 0-100km/h
6.3 s
Max Speed
-
Max Speed
-
Torque
560 - 850 Nm
Torque
480 Nm
Number of Cylinders
6 - 8
Number of Cylinders
-
Power kW
247 - 467 kW
Power kW
224 kW
Engine capacity
2,989 - 3,982 cm3
Engine capacity
-

General
Model Year
2026
Model Year
2026
CO2 Efficiency Class
G, B, F
CO2 Efficiency Class
A
Brand
Mercedes-Benz
Brand
Cadillac
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.