The BMW X3 has long been a cornerstone of the brand’s lineup, consistently ranking as one of its best-selling models. In 2023, BMW sold nearly 1,000 units daily, a testament to its appeal in the compact luxury SUV segment. For 2025, the X3 receives a significant overhaul, with the M50 xDrive variant positioned as the range-topping model, replacing the outgoing X3 M40i. With a hybrid-enhanced 3.0-liter inline-six engine, bold new styling, and advanced technology, the 2025 BMW X3 M50 aims to blend sporty dynamics with everyday practicality. But does it deserve the M badge, or is it merely an M-lite pretender? This first test dives into the performance, design, technology, and driving experience to answer that question.
Performance: Power and Precision
At the heart of the 2025 BMW X3 M50 is a revised version of BMW’s iconic B58 3.0-liter turbocharged inline-six engine, now paired with a 48-volt mild-hybrid system. This setup delivers 393 horsepower and 428 lb-ft of torque, an increase of 11 hp and 59 lb-ft over the previous X3 M40i. The power is routed through an eight-speed ZF automatic transmission and BMW’s xDrive all-wheel-drive system, with an electronic rear limited-slip differential enhancing traction.
The numbers tell an impressive story. The X3 M50 accelerates from 0 to 60 mph in a claimed 4.4 seconds, though some tests, like MotorTrend’s, recorded an even quicker 4.0 seconds. The quarter-mile is dispatched in 12.6 seconds at 109.7 mph, with aggressive upshifts adding a visceral edge, amplified by piped-in engine sounds through the stereo. These figures put the X3 M50 in the same league as some sports cars, making it a formidable player in the compact luxury SUV segment.
The mild-hybrid system enhances low-speed smoothness, with the electric motor integrated into the transmission providing instant torque for seamless power delivery. Fuel economy is another highlight, with EPA ratings of 25 mpg city, 30 mpg highway, and 27 mpg combined—a 4-mpg improvement over the M40i. During real-world testing, the X3 M50 consistently met or exceeded these figures, making it one of the most efficient six-cylinder SUVs in its class.
The M50’s performance is further elevated by its adaptive M suspension, variable sport steering, and upgraded brakes. These components work together to deliver sharp handling and confident stopping power. On twisty back roads, the X3 M50 feels poised, with minimal body roll and precise steering that adapts to driving conditions. However, some testers noted that the steering, while accurate, feels lighter than in previous M Performance models, potentially sacrificing some feedback for comfort.
Design: Bold and Polarizing
The 2025 X3 M50 introduces BMW’s new “monolithic” design language, characterized by cleaner lines and a more aggressive stance. Measuring 4755 mm in length, 1920 mm in width, and 1660 mm in height, the G45-generation X3 is 47 mm longer, 29 mm wider, and 16 mm lower than its predecessor. This gives it a sportier profile, accentuated by the M-specific styling elements like quad exhaust pipes, a bold black double-rib M kidney grille, and 20-inch M bi-color wheels (with 21-inch options available).
The front end is dominated by the iconic kidney grille with an optional illuminated border, flanked by L-shaped LED headlights that replace the traditional angel-eye design. While the grille avoids the oversized proportions of the iX, it remains a polarizing feature. Some reviewers praise its commanding presence, while others, like those at PistonHeads, argue it lacks subtlety, especially in lighter colors like Dune Grey Metallic.
Inside, the X3 M50’s cabin is a leap forward in modernity but not without flaws. The BMW Curved Display, combining a 12.3-inch digital driver’s display and a 14.9-inch infotainment screen, runs the latest iDrive 9 system. The minimalist interior features a woven textile dashboard made from recycled polyester and a fixed panoramic Sky Lounge roof. However, cost-cutting is evident in some areas, with smeary black plastic replacing physical buttons and lower cabin materials that feel less premium than expected for a $65,275 starting price (rising to $76,775 as tested with options).
The interior is spacious, with ample room for three rear passengers and 67.1 cubic feet of cargo space with the seats folded. The ambient lighting, with 15 color options, adds flair, shifting to dynamic red and blue hues in Sport mode or calming ivory and green in Relax mode. Yet, the lack of physical climate controls and a toggle-style gear selector have drawn criticism for prioritizing style over usability.
Technology: Cutting-Edge but Overly Complex
The 2025 X3 M50 is packed with advanced technology, starting with the iDrive 9 system. The Curved Display offers crisp graphics and seamless smartphone integration via wireless Apple CarPlay and Android Auto. A head-up display with curve preview functionality provides navigation and speed data, enhancing driver confidence on unfamiliar roads. However, the interface’s reliance on touch controls can be distracting, and some instrument graphics have been criticized for poor readability.
Driver-assistance systems are robust, with the optional Driving Assistance Professional package including Traffic Jam Assist, which enables hands-free driving in stop-and-go traffic on designated highways. Adaptive cruise control with traffic-light recognition and automated lane changes further elevate the X3 M50’s tech credentials. While these features reduce driver fatigue, they require constant attention, as the system is not fully autonomous.
The M50 also introduces BMW’s IconicSounds, typically reserved for EVs, to augment the engine note. While the synthetic sound enhances the sporty feel, purists lament the muted exhaust compared to the M40i’s rawer tone. The quad exhaust pipes deliver a pleasing burble in Sport mode, but the overall sound is less visceral than expected from a six-cylinder BMW.
Driving Experience: Sporty Yet Refined
The X3 M50 strikes a delicate balance between performance and comfort. In its default Comfort mode, the ride is plush, absorbing bumps with ease, thanks to the adaptive suspension. The mild-hybrid system ensures smooth power delivery, making city driving effortless. Switch to Sport mode, and the M50 transforms, with sharper throttle response, stiffer suspension, and more aggressive shift logic. However, the lack of customizable drive modes limits flexibility—testers at MotorTrend noted they grew tired of the overly aggressive upshifts in Sport mode.
On twisty roads, the X3 M50 feels agile for its 4,535-pound curb weight, with the M Sport differential and rear-biased xDrive system providing confident grip. The suspension controls body roll effectively, though some reviewers noted a slight floatiness in Comfort mode compared to the sharper M40i. The X3 M50’s handling outshines rivals like the Mercedes-AMG GLC43 in straight-line acceleration but lags slightly in lateral grip, as evidenced by figure-eight testing.
For daily driving, the X3 M50 excels, offering a quiet cabin, minimal road noise, and a refined ride suitable for long highway trips. Its 4,300-pound towing capacity adds practicality, making it a versatile choice for families and enthusiasts alike.
Comparison with Competitors
|
Feature |
2025 BMW X3 M50 |
2025 Mercedes-AMG GLC43 |
2025 Audi SQ5 (Estimated) |
|---|---|---|---|
|
Engine |
3.0L Turbo I-6, Mild-Hybrid |
2.0L Turbo I-4, Mild-Hybrid |
3.0L Turbo V-6 |
|
Horsepower |
393 hp |
416 hp |
~349 hp |
|
Torque |
428 lb-ft |
369 lb-ft |
~369 lb-ft |
|
0-60 mph |
4.0–4.4 seconds |
4.7 seconds |
~4.7 seconds |
|
Fuel Economy (Combined) |
27 mpg |
21 mpg |
~22 mpg |
|
Base Price |
$65,275 | $68,600 | ~$65,000 |
|
Cargo Space (Seats Down) |
67.1 cu ft |
59.1 cu ft |
~60.4 cu ft |
The X3 M50 outperforms the GLC43 in acceleration and fuel economy but falls short in interior quality and lateral grip. The Audi SQ5, yet to be fully tested for 2025, is expected to be a close competitor, though its V-6 engine may lack the BMW’s refinement. The Porsche Macan S remains a benchmark for handling but sacrifices practicality and efficiency.
Is It a Real M Car?
The question of whether the X3 M50 qualifies as a “real” M car is subjective. It lacks the raw edge of a full-fledged X3 M, which BMW has discontinued, and its steering and exhaust note are less engaging than the M40i’s. However, its blistering acceleration, refined handling, and versatile nature make it a compelling M Performance vehicle. It’s not a track-focused machine like an M2 but excels as a sporty family SUV that can hold its own on back roads.
Looking Forward
The 2025 BMW X3 M50 is a bold evolution of BMW’s best-selling SUV, blending impressive performance, advanced technology, and polarizing design. Its 393-hp inline-six, efficient mild-hybrid system, and sharp handling make it a standout in the compact luxury SUV segment. While the interior’s cost-cutting and complex infotainment draw criticism, the X3 M50’s balance of sport and comfort is undeniable. Priced at $65,275 (up to $76,775 as tested), it’s not cheap, but it offers a compelling package for enthusiasts and families alike. Whether it’s a “real” M car depends on your definition, but it’s undeniably a top contender in its class.
