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Mercedes S Class vs BYD Sealion 7 comparison

Compare performance (635 HP vs 530 HP), boot space and price (104,000 £ vs 42,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes S Class or BYD Sealion 7?

Mercedes S Class vs BYD Sealion 7: Key differences

Mercedes S Class

  • slightly more power
  • somewhat quicker 0–100 km/h
  • barely lighter
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BYD Sealion 7

5 (2 Reviews)
rate
  • clearly cheaper
  • substantially more electric range
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All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

By Achim Sedelmaier

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.

BYD Sealion 7 is clearly cheaper – starting at 42,800 £ , while the Mercedes S Class costs 104,000 £ . That’s a price difference of around 61,171 £.

As for electric range, the BYD Sealion 7 offers substantially more range – reaching up to 502 km, about 384 km more than the Mercedes S Class.

Sealion 7

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 Mercedes S Class offers slightly more power – delivering 635 HP compared to 530 HP. That’s roughly 105 HP more horsepower.

When accelerating from 0 to 100 km/h, the Mercedes S Class is somewhat quicker – completing the sprint in 4 s, while the BYD Sealion 7 takes 4.5 s. That’s about 0.5 s quicker.

There’s also a difference in torque: the Mercedes S Class delivers slightly more torque with 850 Nm compared to 690 Nm. That’s about 160 Nm more.

S Class

Space and Everyday Use:

Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.

Both vehicles offer seating for 5 people.

In terms of curb weight, Mercedes S Class is barely lighter – 2,165 kg compared to 2,225 kg. The difference is around 60 kg.

When it comes to payload, the Mercedes S Class carries noticeably more – 660 kg compared to 410 kg. That’s a difference of about 250 kg.

Who wins the race in the data check?

The BYD Sealion 7 is clearly superior 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.

from £42,800
Sealion 7

BYD Sealion 7

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 313 - 530 HP
  • Consumption kWh/100km : 19.9 - 21.9 kWh/100km
  • Electric Range : 456 - 502 km
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Frequently compared as well

BYD Sealion 7
Mazda CX-6e
VS
In one corner is the tech‑packed BYD Sealion 7, a gadget-rich challenger promising range and features for the money; in the other is the Mazda CX‑6e, Mazda’s sleeker, driver-focused answer with a more premium feel. We’ll pit them on comfort, performance, tech and running costs so you know which one …
BYD Sealion 7
ZEEKR 7X
VS
The BYD Sealion 7 plays the value card with clever packaging, generous range claims and soft-riding manners, while the ZEEKR 7X feels like the sharper, tech-forward alternative that’s happier chasing pace and premium detailing. If you want an everyday EV that stretches your money on range and …
Mercedes S Class
BYD Sealion 7

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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Reviews Mercedes S Class

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

BYD Sealion 7

The Sealion 7 captivates with its striking design and impressive performance that appeals to both enthusiasts and casual drivers alike. With a focus on comfort and advanced technology, this model redefines the driving experience, making every journey enjoyable. Its sleek silhouette coupled with an innovative interior showcases the perfect blend of style and functionality.

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Reviews BYD Sealion 7

5 (2 Reviews)
rate
oriol
27 Feb 2026, 15:33:27

range that I can always charge to 100% — unlike other brands that told me it was recommended to stop at 80%, which consequently cut my real range from 600 to 480 by not being able to charge to 100%. I think that's something people should know.

How do you mainly use this car? (optional): Commuter (short/medium distance)
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money

Frequently compared as well

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BYD Sealion 7
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BYD Sealion 7
VS
The BYD Seal U brings crossover practicality and a higher driving position for buyers after everyday versatility, while the sleeker BYD Sealion 7 swaps that raised stance for a lower, sportier profile and crisper road manners. Choose the Seal U for family-friendly space and comfort, or the Sealion …
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BYD Sealion 7
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The Toyota bZ4X feels like a reliably mellow electric SUV — conservative styling, predictable handling and Toyota-level build confidence for buyers who want fuss-free ownership. The BYD Sealion 7, by contrast, punches above its price with slick tech, impressive range and a sportier edge, making it …
XPeng G6
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BYD Sealion 7
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BYD Atto 3
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BYD Sealion 7
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Mercedes S Class
BYD Sealion 7

Costs and Consumption
Price
104,000 - 201,400 £
Price
42,800 - 52,300 £
Consumption L/100km
2.2 - 11 L/100km
Consumption L/100km
-
Consumption kWh/100km
-
Consumption kWh/100km
19.9 - 21.9 kWh/100km
Electric Range
98 - 118 km
Electric Range
456 - 502 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
2,225 - 2,435 kg
Trunk capacity
-
Trunk capacity
520 L
Length
-
Length
-
Width
1,921 mm
Width
1,925 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
420 - 660 kg
Payload
410 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
Rear-Wheel Drive, All-Wheel Drive
Power HP
336 - 635 HP
Power HP
313 - 530 HP
Acceleration 0-100km/h
4 - 5.7 s
Acceleration 0-100km/h
4.5 - 6.7 s
Max Speed
-
Max Speed
-
Torque
560 - 850 Nm
Torque
380 - 690 Nm
Number of Cylinders
6 - 8
Number of Cylinders
-
Power kW
247 - 467 kW
Power kW
230 - 390 kW
Engine capacity
2,989 - 3,982 cm3
Engine capacity
-

General
Model Year
2026
Model Year
2024
CO2 Efficiency Class
G, B, F
CO2 Efficiency Class
A
Brand
Mercedes-Benz
Brand
BYD
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.