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BMW i7 vs smart #3 comparison

Compare performance (659 HP vs 272 HP), boot space and price (99,300 £ vs 42,000 £ ) at a glance. Find out which car is the better choice for you – BMW i7 or smart #3?

BMW i7 vs smart #3: Key differences

BMW i7

  • significantly more power
  • visibly more electric range
  • significantly quicker 0–100 km/h
  • noticeably more trunk space
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smart #3

5 (1 Reviews)
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  • significantly cheaper
  • a bit more efficient
  • substantially lighter
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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

i7

Costs and Efficiency:

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

smart #3 is significantly cheaper – starting at 42,000 £ , while the BMW i7 costs 99,300 £ . That’s a price difference of around 57,351 £.

In terms of energy consumption, the smart #3 is a bit more efficient: consuming 16.3 kWh/100km compared to 18.5 kWh/100km for the BMW i7. That’s a difference of about 2.2 kWh/100km.

As for electric range, the BMW i7 offers visibly more range – reaching up to 624 km, about 169 km more than the smart #3.

#3

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 BMW i7 offers significantly more power – delivering 659 HP compared to 272 HP. That’s roughly 387 HP more horsepower.

When accelerating from 0 to 100 km/h, the BMW i7 is significantly quicker – completing the sprint in 3.7 s, while the smart #3 takes 5.8 s. That’s about 2.1 s quicker.

There’s also a difference in torque: the BMW i7 delivers considerably more torque with 1,100 Nm compared to 384 Nm. That’s about 716 Nm more.

i7

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 #3 is substantially lighter – 1,810 kg compared to 2,595 kg. The difference is around 785 kg.

Looking at boot space, the BMW i7 offers noticeably more boot space – 500 L compared to 370 L. That’s a difference of about 130 L.

When it comes to payload, the BMW i7 carries moderately more – 535 kg compared to 450 kg. That’s a difference of about 85 kg.

Who wins the race in the data check?

The BMW i7 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.

from £99,300
i7

BMW i7

  • Engine Type Electric
  • Transmission Automatic
  • Drive Type Rear-Wheel Drive, All-Wheel Drive
  • Power HP 455 - 659 HP
  • Consumption kWh/100km 18.5 - 20.8 kWh/100km
  • Electric Range 559 - 624 km
BMW i7
smart #3

Costs and Consumption

View detailed analysis

Engine and Performance

View detailed analysis

Dimensions and Body

View detailed analysis

BMW i7

The BMW i7 is a quietly imposing electric limousine that wraps advanced tech and traditional Bavarian comfort in a futuristic skin. For buyers after serene luxury with a mischievous streak, it pampers rear-seat occupants while reminding the driver that BMW still knows how to make a big car feel alive.

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smart #3

The Smart #3 turns the brand's cheeky city-car attitude into a grown-up compact SUV, pairing sleek styling with a surprisingly roomy, well-made interior. It's a brilliant pick for buyers who want electric ease without dullness — practical enough for daily life, but still lively enough to make parking and grocery runs feel a little fun.

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BMW i7
smart #3

Costs and Consumption

Price
99,300 - 157,200 £
Price
42,000 £
Consumption L/100km
-
Consumption L/100km
-
Consumption kWh/100km
18.5 - 20.8 kWh/100km
Consumption kWh/100km
16.3 kWh/100km
Electric Range
559 - 624 km
Electric Range
455 km
Battery Capacity
-
Battery Capacity
-
co2
0 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
2,595 - 2,770 kg
Curb weight
1,810 kg
Trunk capacity
500 L
Trunk capacity
370 L
Length
-
Length
-
Width
1,950 mm
Width
1,844 mm
Height
-
Height
-
Max trunk capacity
-
Max trunk capacity
-
Payload
480 - 535 kg
Payload
450 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
Power HP
455 - 659 HP
Power HP
272 HP
Acceleration 0-100km/h
3.7 - 5.5 s
Acceleration 0-100km/h
5.8 s
Max Speed
-
Max Speed
-
Torque
650 - 1,100 Nm
Torque
384 Nm
Number of Cylinders
-
Number of Cylinders
-
Power kW
335 - 485 kW
Power kW
200 kW
Engine capacity
-
Engine capacity
-

General

Model Year
2,022 - 2,023
Model Year
2025
CO2 Efficiency Class
A
CO2 Efficiency Class
A
Brand
BMW
Brand
smart
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.