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BMW i4 vs Mazda 6 Saloon – Performance, range & efficiency compared

Everyday use, family trips or long-distance drives – here’s where the differences show.
Discover whether BMW i4 or Mazda 6 Saloon fits your lifestyle better.

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

i4 @ press.bmwgroup.com

Costs and Efficiency:

Looking at overall running costs, both models reveal some interesting differences in everyday economy.

Mazda 6 Saloon has a distinct advantage in terms of price – it starts at 38500 £, while the BMW i4 costs 49400 £. That’s a price difference of around 10886 £.

In terms of energy consumption, the advantage goes to the BMW i4: with 14.70 kWh per 100 km, it’s a bit more efficient than the Mazda 6 Saloon with 16.50 kWh. That’s a difference of about 1.80 kWh.

As for range, the BMW i4 performs barely noticeable better – achieving up to 613 km, about 61 km more than the Mazda 6 Saloon.

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 i4 has a significantly edge – offering 601 HP compared to 258 HP. That’s roughly 343 HP more horsepower.

In acceleration from 0 to 100 km/h, the BMW i4 is convincingly quicker – completing the sprint in 3.70 s, while the Mazda 6 Saloon takes 7.60 s. That’s about 3.90 s faster.

In terms of top speed, the BMW i4 performs evident better – reaching 225 km/h, while the Mazda 6 Saloon tops out at 175 km/h. The difference is around 50 km/h.

There’s also a difference in torque: BMW i4 pulls clearly stronger with 795 Nm compared to 320 Nm. That’s about 475 Nm difference.

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 curb weight, Mazda 6 Saloon is slight lighter – 2027 kg compared to 2070 kg. The difference is around 43 kg.

In terms of boot space, the BMW i4 offers noticeable more room – 470 L compared to 336 L. That’s a difference of about 134 L.

In maximum load capacity, the BMW i4 performs a bit better – up to 1290 L, which is about 216 L more than the Mazda 6 Saloon.

When it comes to payload, BMW i4 evident takes the win – 480 kg compared to 360 kg. That’s a difference of about 120 kg.

Who comes out on top?

Overall, the BMW i4 shows itself to be leaves the rival little chance and secures the title of DriveDuel Champion.
It convinces with the more balanced overall package and proves to be the more versatile choice for everyday use.

from about £49,400
P90439358_highRes_bmw-i4-m50-9-2021

BMW i4

  • Engine Type : Electric
  • Transmission : Automatic
  • Drive Type : Rear-Wheel Drive, All-Wheel Drive
  • Power HP : 286 - 601 HP
  • Consumption kWh/100km : 14.7 - 16.7 kWh
  • Electric Range : 514 - 613 km
details

BMW i4

5 (1)
rate

The BMW i4 beautifully merges the dynamism of a saloon with the efficiency of an electric vehicle, offering a truly exhilarating driving experience. Its design seamlessly blends elegance and athleticism, highlighting BMW's dedication to both aesthetics and performance. Inside, the i4 boasts a high-tech cockpit that harmonises luxury with intuitive technology, allowing drivers to stay connected while on the move.

details
P90439358_highRes_bmw-i4-m50-9-2021 @ press.bmwgroup.com
P90439356_highRes_bmw-i4-m50-9-2021 @ press.bmwgroup.com
P90439360_highRes_bmw-i4-m50-9-2021 @ press.bmwgroup.com
P90439369_highRes_bmw-i4-m50-9-2021 @ press.bmwgroup.com
P90422904_highRes_bmw-i4-interieur-6-2 @ press.bmwgroup.com

Mazda 6 Saloon

The Mazda 6 saloon embodies elegant design and a refined driving experience, making it a standout in its class. Its sleek exterior lines are matched by a sophisticated interior that prioritises comfort and style. On the road, the Mazda 6 delivers a balanced performance, blending smooth handling with a responsive drive that's sure to satisfy enthusiasts and everyday drivers alike.

details

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Costs and Consumption
Price
49400 - 62500 £
Price
38500 - 41600 £
Consumption L/100km
-
Consumption L/100km
-
Consumption kWh/100km
14.7 - 16.7 kWh
Consumption kWh/100km
16.5 - 16.6 kWh
Electric Range
514 - 613 km
Electric Range
479 - 552 km
Battery Capacity
67.1 - 81.3 kWh
Battery Capacity
-
co2
0 g/km
co2
0 g/km
Fuel tank capacity
-
Fuel tank capacity
-

Dimensions and Body
Body Type
Hatchback
Body Type
Sedan
Seats
5
Seats
5
Doors
5
Doors
5
Curb weight
2070 - 2285 kg
Curb weight
2027 - 2028 kg
Trunk capacity
470 L
Trunk capacity
336 L
Length
4783 mm
Length
4921 mm
Width
1852 mm
Width
1890 mm
Height
1448 mm
Height
1491 mm
Max trunk capacity
1290 L
Max trunk capacity
1074 L
Payload
445 - 480 kg
Payload
359 - 360 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
286 - 601 HP
Power HP
245 - 258 HP
Acceleration 0-100km/h
3.7 - 6 s
Acceleration 0-100km/h
7.6 - 7.8 s
Max Speed
190 - 225 km/h
Max Speed
175 km/h
Torque
400 - 795 Nm
Torque
320 Nm
Number of Cylinders
-
Number of Cylinders
-
Power kW
210 - 442 kW
Power kW
180 - 190 kW
Engine capacity
-
Engine capacity
-

General
Model Year
2025
Model Year
2025
CO2 Efficiency Class
A
CO2 Efficiency Class
A
Brand
BMW
Brand
Mazda

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What drivetrain options does the BMW i4 have?

The BMW i4 is available as Rear-Wheel Drive or All-Wheel Drive.

The prices and data displayed are estimates based on German list prices and may vary by country. This information is not legally binding.