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BYD Atto 3 vs smart #5 comparison

Compare performance (449 HP vs 646 HP), boot space and price (38,600 £ vs 39,300 £ ) at a glance. Find out which car is the better choice for you – BYD Atto 3 or smart #5?

BYD Atto 3 vs smart #5: Key differences

BYD Atto 3

4.1 (7 Reviews)
rate
  • barely cheaper
  • moderately more efficient
  • slightly lighter
details

smart #5

4.9 (5 Reviews)
rate
  • clearly more power
  • somewhat more electric range
  • only slightly quicker 0–100 km/h
  • noticeably more trunk space
details

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

Atto 3

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 Atto 3 is barely cheaper – starting at 38,600 £ , while the smart #5 costs 39,300 £ . That’s a price difference of around 780 £.

In terms of energy consumption, the BYD Atto 3 is moderately more efficient: consuming 16.4 kWh/100km compared to 18.4 kWh/100km for the smart #5. That’s a difference of about 2 kWh/100km.

As for electric range, the smart #5 offers somewhat more range – reaching up to 590 km, about 80 km more than the BYD Atto 3.

#5

Engine and Performance:

Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.

When it comes to engine power, the smart #5 offers clearly more power – delivering 646 HP compared to 449 HP. That’s roughly 197 HP more horsepower.

When accelerating from 0 to 100 km/h, the smart #5 is only slightly quicker – completing the sprint in 3.8 s, while the BYD Atto 3 takes 3.9 s. That’s about 0.1 s quicker.

There’s also a difference in torque: the smart #5 delivers noticeably more torque with 710 Nm compared to 560 Nm. That’s about 150 Nm more.

Atto 3

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, BYD Atto 3 is slightly lighter – 1,880 kg compared to 2,200 kg. The difference is around 320 kg.

Looking at boot space, the smart #5 offers noticeably more boot space – 630 L compared to 490 L. That’s a difference of about 140 L.

When it comes to payload, the BYD Atto 3 carries very slightly more – 530 kg compared to 502 kg. That’s a difference of about 28 kg.

Who wins the race in the data check?

The smart #5 is far 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.

from £39,300
#5

smart #5

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 340 - 646 HP
  • Consumption kWh/100km 18.4 - 19.9 kWh/100km
  • Electric Range 465 - 590 km
details

Frequently compared as well

Mercedes GLB
smart #5
VS
The Mercedes GLB is a sensible, slightly boxy premium compact SUV that delivers real-world space, family practicality and a composed long-distance ride, while the smart #5 is a punchy electric crossover that trades rear-seat room for sharp styling, low running costs and urban agility. If you …
BYD Atto 3
BYD Sealion 7
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BYD Atto 3
smart #5

Costs and Consumption
View detailed analysis

Engine and Performance
View detailed analysis

Dimensions and Body
View detailed analysis

BYD Atto 3

The BYD Atto 3 is an electric crossover that blends a distinctive, modern design with a comfortable, well-equipped cabin suited to everyday family use. It offers a relaxed, smooth driving feel and practical running costs, making it a sensible choice if you want an uncomplicated, value-focused EV.

details
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4CD0D607-8DF0-480E-92A0-FFE2DD0C2A7D
A4BCEC5F-F54A-4C81-8C3B-2C7767DF6D72
E96AFF07-FF39-4455-88FE-E60F4D607FE6
AD877C78-5875-44DA-B1B6-1E99A05AC058

Reviews BYD Atto 3

4.1 (7 Reviews)
rate
Marinos manolessos
21 Jun 2026, 19:22:18

More quicker better price better equipped rwd move

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
BERNARD
17 Apr 2026, 12:36:55

It seems to better meet my expectations when it comes to fuel economy and overall efficiency.

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 #5

The Smart #5 continues to build on the brand's legacy of compact and efficient urban vehicles, now infused with a more modern and stylish design. Its sleek appearance is complemented by a spacious interior, offering comfort without compromising its compact nature. This model is ideal for city dwellers seeking a blend of innovation, practicality, and style in their daily drives.

details
1920_smart-hashtag5-ptd-brabus-4x3-009 (1)
1920_smart-hashtag5-ptd-brabus-4x3-005
1920_smart-hashtag5-ptd-brabus-4x3-014
1920_smart-hashtag5-ptd-brabus-4x3-004

Reviews smart #5

4.9 (5 Reviews)
rate
Stefan
31 Jan 2026, 22:25:16

I spent a weekend with the Brabus #5 and I’m thrilled! Extremely quiet, even at just under 220 km/h. Very good ride comfort, especially if, like me, you prefer a softer setup for better suspension comfort!
Brutal acceleration that only really hits from about 50 km/h and culminates in a 0–200 km/h sprint in 10.2 seconds… There are almost no cars up to roughly 1,000 hp that are faster!
The actual charging performance is, I believe, the best of any passenger car available in the EU (only Zeekr shows a little more on paper, but probably not in real life) — it charges at peaks up to 425 kW! 10–80% in 13 minutes and 5–100% in 28 minutes.
The fit and finish are in places better than the Mercedes E‑Class...

How do you mainly use this car? (optional): Long-distance driver
Efficiency / Consumption & Range
Comfort & Interior
Driving Fun / Performance
Technology & Infotainment
Safety
Practicality / Trunk & Everyday Use
Value for Money
Stefan
4 Dec 2025, 21:11:24

Apart from the hopefully soon improved/reduced chimes and the horrendously hard-to-reach mute for the speed warning, the car is really a knockout!
Very, very quiet, comfortable, extremely fast (Brabus version), great build quality, great equipment!

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BYD Atto 3
smart #5

Costs and Consumption
Price
38,600 - 43,700 £
Price
39,300 - 52,200 £
Consumption L/100km
-
Consumption L/100km
-
Consumption kWh/100km
16.4 - 17.8 kWh/100km
Consumption kWh/100km
18.4 - 19.9 kWh/100km
Electric Range
470 - 510 km
Electric Range
465 - 590 km
Battery Capacity
-
Battery Capacity
74.4 - 94 kWh
co2
0 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
-
Doors
5
Curb weight
1,880 - 1,990 kg
Curb weight
2,200 - 2,378 kg
Trunk capacity
490 L
Trunk capacity
630 L
Length
-
Length
4,695 mm
Width
1,875 mm
Width
1,920 mm
Height
-
Height
1,705 mm
Max trunk capacity
-
Max trunk capacity
1,530 L
Payload
530 kg
Payload
475 - 502 kg

Engine and Performance
Engine Type
Electric
Engine Type
Electric
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Reduction Gearbox
Transmission Detail
Reduction Gearbox
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
313 - 449 HP
Power HP
340 - 646 HP
Acceleration 0-100km/h
3.9 - 5.5 s
Acceleration 0-100km/h
3.8 - 6.9 s
Max Speed
-
Max Speed
200 - 210 km/h
Torque
380 - 560 Nm
Torque
373 - 710 Nm
Number of Cylinders
-
Number of Cylinders
-
Power kW
230 - 330 kW
Power kW
250 - 475 kW
Engine capacity
-
Engine capacity
-

General
Model Year
2026
Model Year
2025
CO2 Efficiency Class
A
CO2 Efficiency Class
A
Brand
BYD
Brand
smart
Is the BYD Atto 3 offered with different drivetrains?

The BYD Atto 3 is offered with Rear-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.