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BYD Seal U vs smart #1 comparison

Compare performance (324 HP vs 428 HP), boot space and price (34,300 £ vs 31,700 £ ) at a glance. Find out which car is the better choice for you – BYD Seal U or smart #1?

BYD Seal U vs smart #1: Key differences

BYD Seal U

4.1 (7 Reviews)
rate
  • visibly more efficient
  • a bit more electric range
  • clearly more trunk space

smart #1

  • very slightly cheaper
  • visibly more power
  • significantly quicker 0–100 km/h
  • barely lighter

All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.

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

Seal U

Costs and Efficiency:

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

smart #1 is very slightly cheaper – starting at 31,700 £ , while the BYD Seal U costs 34,300 £ . That’s a price difference of around 2,572 £.

In terms of energy consumption, the BYD Seal U is visibly more efficient: consuming 12.1 kWh/100km compared to 16.8 kWh/100km for the smart #1. That’s a difference of about 4.7 kWh/100km.

As for electric range, the BYD Seal U offers a bit more range – reaching up to 500 km, about 60 km more than the smart #1.

#1

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 smart #1 offers visibly more power – delivering 428 HP compared to 324 HP. That’s roughly 104 HP more horsepower.

When accelerating from 0 to 100 km/h, the smart #1 is significantly quicker – completing the sprint in 3.9 s, while the BYD Seal U takes 5.9 s. That’s about 2 s quicker.

Looking at top speed, the smart #1 is only slightly faster – reaching 180 km/h, while the BYD Seal U tops out at 175 km/h. The difference is around 5 km/h.

There’s also a difference in torque: the smart #1 delivers only slightly more torque with 584 Nm compared to 550 Nm. That’s about 34 Nm more.

Seal U

Space and Everyday Use:

Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.

Both vehicles offer seating for 5 people.

In terms of curb weight, smart #1 is barely lighter – 1,780 kg compared to 1,940 kg. The difference is around 160 kg.

Looking at boot space, the BYD Seal U offers clearly more boot space – 552 L compared to 323 L. That’s a difference of about 229 L.

For maximum load capacity, the BYD Seal U offers markedly more capacity – up to 1,440 L, about 454 L more than the smart #1.

When it comes to payload, the smart #1 carries slightly more – 470 kg compared to 410 kg. That’s a difference of about 60 kg.

Who wins the race in the data check?

The smart #1 is narrowly 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 £31,700
#1

smart #1

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 272 - 428 HP
  • Consumption kWh/100km : 16.8 - 18.2 kWh/100km
  • Electric Range : 310 - 440 km
details

Frequently compared as well

BYD Seal U
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 …
BYD Seal U
Toyota RAV4
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BYD Seal U is a sleek, driver‑focused electric newcomer that delivers brisk, silent acceleration, cutting‑edge tech and impressive running‑cost savings — it’s the car that makes you forget what an internal‑combustion soundtrack sounded like. The Toyota RAV4 sticks to its strengths: rugged, roomy …
BYD Seal U
smart #1

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BYD Seal U

The BYD Seal U pairs a sleek fastback silhouette with a surprisingly roomy, tech-rich cabin, giving electric chic without the showroom pretension. It's a smart pick for buyers after confident handling, sensible practicality and standout value — all wrapped up with a cheeky grin when you put your foot down.

details
BYD SEAL U 157
BYD SEAL U 061
BYD SEAL U 079

Reviews BYD Seal U

4.1 (7 Reviews)
rate
Emily
20 Jan 2026, 22:52:34

Broke down at 200 KM

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

smart #1

The Smart #1 feels like a breath of fresh air in the compact EV world, pairing playful styling with usable space and a cabin that punches above its size. It skips the fuss and delivers an easygoing, city-friendly driving experience with clever features that make it a sensible, slightly cheeky choice for everyday motoring.

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Limbo_Edition1_EXT_25_White_Gold_front
Limbo_Edition1_EXT_09_White_Gold_Powered_Tailgate
Limbo_Edition1_EXT_07_White_Gold_Powered_Top
Limbo_Edition1_EXT_05_White_Gold_side
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Reviews smart #1

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

Frequently compared as well

BYD Seal U
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Fresh from BYD’s EV revolution, the sleek Seal U brings range, tech and bold styling to spar with the MG HS/EHS — MG’s faithful family crossover offered as a petrol and a plug‑in hybrid that plays the safe, sensible card. Which one gives you the best mix of space, running costs and grin‑per‑mile?
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The BYD Seal U feels like a sleek, tech‑forward EV with impressive performance-to-price ratio, while the Lynk & Co 08 plays the role of bold, spacious SUV that prioritizes comfort and presence. If you want sporty agility and cutting‑edge battery tech, go Seal U; if you need family practicality, …
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Porsche Cayenne
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Put simply: the BYD Seal U is a slick, value-packed electric newcomer that trades brand pedigree for cutting-edge tech, impressive range and a price that makes you rethink running on petrol, while the Porsche Cayenne remains the benchmark for SUV dynamics, luxury and towing practicality with a …
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Think of the BYD Seal U as the nimble, slightly sharper hatchback that’s happier darting through city streets, while the BYD Seal 6 is the sleeker, longer-legged cruiser built for relaxed motorway miles and extra range. If you want playful agility and everyday practicality go Seal U, but if …
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In one corner, the sleek, spoiler-tinged BYD Seal U — an electric fastback that flirts with sports-car dynamics while packing a tech-bomb of range and gadgets; in the other, the practical, ever-adaptable Kia Sportage — a compact SUV that blends comfort, space and sensible running costs into a tidy …
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BYD Seal U
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If you want a friendly, practical EV that looks like it drinks coffee in a hipster cafe and carries everything from groceries to weekend bikes, the BYD Atto 3 is the sensible, value-packed choice. The BYD Seal U, by contrast, dresses up the electric experience with sleeker lines, sharper handling …
BYD Seal U
BYD Seal
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The BYD Seal U trades the low-slung, swoopy charm of the BYD Seal for a taller, more practical shape — think crossover comfort, easier loading and a higher driving position without giving up the EV's brisk acceleration. If you want sportier looks and the slickest aero for maximum range, choose the …
BYD Seal U
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The BYD Seal U punches above its price with a sleek fastback profile, surprisingly sporty handling and a tech-packed interior that makes it a compelling foil to the more familiar Tesla Model Y. If you prize Supercharger convenience, software polish and stronger resale you’ll gravitate to the Model …
BYD Seal U
smart #1

Costs and Consumption
Price
34,300 - 39,800 £
Price
31,700 - 45,000 £
Consumption L/100km
-
Consumption L/100km
-
Consumption kWh/100km
12.1 - 20.5 kWh/100km
Consumption kWh/100km
16.8 - 18.2 kWh/100km
Electric Range
70 - 500 km
Electric Range
310 - 440 km
Battery Capacity
-
Battery Capacity
47 - 62 kWh
co2
0 - 71 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
SUV
Body Type
SUV
Seats
5
Seats
5
Doors
5
Doors
5
Curb weight
1,940 - 2,147 kg
Curb weight
1,780 - 1,900 kg
Trunk capacity
425 - 552 L
Trunk capacity
313 - 323 L
Length
4,785 mm
Length
4,270 - 4,300 mm
Width
1,890 mm
Width
1,822 mm
Height
1,668 mm
Height
1,636 mm
Max trunk capacity
1,440 L
Max trunk capacity
976 - 986 L
Payload
410 kg
Payload
425 - 470 kg

Engine and Performance
Engine Type
Electric, Plugin Hybrid
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox, Automatic Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
Front-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
218 - 324 HP
Power HP
272 - 428 HP
Acceleration 0-100km/h
5.9 - 9.6 s
Acceleration 0-100km/h
3.9 - 6.7 s
Max Speed
175 km/h
Max Speed
180 km/h
Torque
300 - 550 Nm
Torque
343 - 584 Nm
Number of Cylinders
4
Number of Cylinders
-
Power kW
160 - 238 kW
Power kW
200 - 315 kW
Engine capacity
1,497 - 1,498 cm3
Engine capacity
-

General
Model Year
2,024 - 2,026
Model Year
2,023 - 2,024
CO2 Efficiency Class
A, B
CO2 Efficiency Class
A
Brand
BYD
Brand
smart
What drivetrain options does the BYD Seal U have?

The BYD Seal U is available as Front-Wheel Drive or All-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.