2023 BMW X3 M40i
The 2023 BMW X3 M40i is a mild-hybrid SUV. It has a 3.0-litre turbocharged six-cylinder engine producing 382 hp (285 kW), with an 8-speed automatic and all-wheel drive. 0–60 mph takes 5.8 seconds and top speed is 155 mph (249 km/h).
ABOUT THE 2023 BMW X3 M40I
The 2023 BMW X3 M40i is the six-cylinder M Performance model of the facelifted G01 X3, in its second year after the update. It uses the B58 turbocharged 3.0-litre inline-six producing 382 hp and 365 lb-ft (500 Nm), with an eight-speed Steptronic automatic and xDrive all-wheel drive tuned with a rear bias.
Late in the G01’s life
After the significant changes of 2022, the 2023 model year brought only minor revisions to equipment and option packaging. With the G01 approaching the end of production, the 2023 car represents a mature, well-sorted version of the design, sitting between the four-cylinder xDrive30i and the X3 M Competition. The next-generation X3 (G45) followed for the 2025 model year.
What it is like
The M40i offers strong mid-range performance and a sports exhaust, but it remains comfortable enough for daily use, especially with the adaptive dampers in their softer setting. Fuel consumption is higher than in the xDrive30i, and the firm ride on large wheels is a common criticism. Assembly for North America takes place in Spartanburg, South Carolina.
Practicality
Five adults fit comfortably, and the boot is among the larger in its class, with split-folding rear seats for longer loads. The powered tailgate and roof rails make it a practical choice for families.
Buying one today
Commonly reported B58 issues include coolant-system leaks and oil-filter-housing gasket seepage. As these are relatively recent cars, check that software updates and any outstanding recall work have been done by a dealer.
Rivals
The 2023 X3 M40i competed with the Audi SQ5, Mercedes-AMG GLC 43, Porsche Macan S and Genesis GV70 3.5T.
Written by CarDetails.org. Last reviewed October 31, 2026.
SPECS
| Make | BMW | Model | X3 M40i |
|---|---|---|---|
| Year | 2023 | Version / Trim | BMW 2023 X3 M40i |
| Body Style | SUV | Doors | 4 |
| Seats | 5 | Ext. Colour | Alpine White, Jet Black, Black Sapphire Metallic, Mineral White Metallic, Dravit Gray Metallic, Phytonic Blue Metallic, Portimao Blue Metallic, San Francisco Red Metallic, Storm Bay Metallic, Brooklyn Gray Metallic, Individual Colours available |
| Steering | LHD / RHD | Manufactured In | United States |
| Drive | All-Wheel Drive (AWD) | Transmission | Automatic (S8) |
| Engine | 3.0L 6-cyl Turbo | Engine Size | 3,000 cc |
| Power | 382 hp / 285 kW | Torque | 500 Nm / 365 lb-ft |
| 0–60 mph (0–97 km/h) | 5.8 sec | Top Speed | 155 mph (249 km/h) |
| Range / Economy | 21 mpg city / 26 mpg hwy | ||
| Wheelbase | 2,864 mm | Kerb Weight | 1,800 kg (3,968 lb) |
HOW IT COMPARES WITH OTHER 2023 SUVS
Compared with other 2023 SUVs in our database, its 382 hp is 19% more than the average 2023 SUV (321 hp), and it reaches 60 mph 0.4 seconds quicker than average, and it is 8% lighter than the typical SUV.
| 2023 BMW X3 M40i | Average 2023 SUVs | Difference | |
|---|---|---|---|
| Power | 382 hp | 321 hp (130 cars) | +19% |
| Torque | 500 Nm | 442 Nm (130 cars) | +13% |
| 0–60 mph | 5.8 s | 6.2 s (133 cars) | -6% |
| Top speed | 155 mph | 128 mph (133 cars) | +21% |
| Kerb weight | 1,800 kg | 1,966 kg (141 cars) | -8% |
| Engine size | 3,000 cc | 2,601 cc (104 cars) | +15% |
Averages are calculated from all cars of the same model year and body type in the CarDetails.org database that have the figure listed. For 0–60 mph, a negative difference means quicker.
CLOSEST RIVALS
Other 2023 SUVs with similar power to the 2023 BMW X3 M40i.
| Car | Power | 0–60 mph | Kerb weight |
|---|---|---|---|
| 2023 BMW X3 M40i | 382 hp | 5.8 s | 1,800 kg |
| 2023 Tesla Model Y AWD | 384 hp | 4.8 s | 1,979 kg |
| 2023 BYD Sea Lion 6 DM-i | 384 hp | 5.0 s | 1,960 kg |
| 2023 Audi e-tron S (20 inch wheels) | 355 hp | 5.5 s | 2,590 kg |
| 2023 Tank 300 Hi4-T | 348 hp | 5.8 s | 2,250 kg |