2018 BMW X4 (G02) Dimensions, Size & Specs

With the side mirrors open, the BMW X4 (G02) measures approximately 2138 to 2139 mm wide (84.2 to 84.3 inches). This width is important to consider when navigating narrow city streets, tight parking spaces, or standard garages. While the open mirrors increase the car's footprint by about 20 cm compared to the body width, the vehicle's advanced parking sensors and driver assistance systems help compensate by providing alerts and maneuvering aid. It's advisable to be cautious in tight spaces due to this increased width, but overall, the vehicle retains good maneuverability for an SUV of its size.

The BMW X4 (G02) stands at a height of 1621 mm (63.8 inches). This relatively low height for an SUV is characteristic of BMW’s coupe-style design, which aims to combine sporty aesthetics with functionality. The lower roofline contributes to a sleek aerodynamic profile, aiding in improved fuel efficiency and reducing wind noise at higher speeds. Internally, the headroom, especially in the rear seats, might be slightly compromised compared to taller SUVs but still offers comfortable space for average-height passengers with a focus on stylish design.

The BMW X4 (G02) has a ride height or ground clearance of 204 mm (8.0 inches). This clearance is ample for light off-road conditions and rough urban roads, allowing the vehicle to handle moderate terrain such as gravel paths, curbs, and uneven city streets without damage to the undercarriage. However, the X4 remains more a sporty luxury SUV focused on on-road dynamics, so while capable for some off-pavement excursions, it is not intended for heavy-duty off-roading like more rugged SUV counterparts.

The BMW X4 (G02) offers a practical luggage capacity of approximately 524 to 525 liters (18.5 to 18.53 cubic feet) with rear seats upright, which comfortably accommodates everyday luggage, groceries, and travel items. When the rear seats are folded down, this capacity increases significantly to 1430 liters (50.47 cubic feet), making it highly versatile for transporting larger cargo or multiple items for longer trips. This flexibility makes the vehicle suitable for both family needs and sporty lifestyles that require additional storage space on demand.

The BMW X4 (G02)'s dimensions make it generally suitable for standard residential garages. Standard garage widths in many regions range from about 2438 mm to 2743 mm (8 to 9 feet), and with the vehicle’s width being 1918 to 1938 mm (75.5 to 76.3 inches) without mirrors, it leaves enough clearance on both sides for door opening and maneuvering. Even considering the increased width with mirrors open (about 2138 to 2139 mm or 84.2 inches), most standard garages can accommodate the car comfortably. However, drivers should still exercise caution when parking and opening doors, as tight garages or those with narrow spaces could pose challenges.

The curb weight of the BMW X4 (G02) ranges from 1720 to 2020 kg (3794 to 4453 lbs), depending on the specific trim and configuration. This weight supports a solid road presence and stability, contributing positively to driving dynamics, especially at higher speeds and on winding roads. However, a heavier vehicle can slightly reduce fuel efficiency and acceleration performance compared to lighter models. BMW balances this by equipping the X4 with efficient engines and technology such as turbocharging, enabling strong performance while managing fuel consumption effectively.

Compared to its predecessor, the BMW X4 F26 (produced from 2014 to 2018), the G02 generation is slightly larger and more refined dimensionally. The G02 extends in length from 4733 to 4763 mm (186.3 to 187.4 inches), while the F26 was approximately 4667 mm (183.7 inches) long, indicating a modest length increase for added interior space and presence. Width increased slightly, aiding stability and comfort, with the G02 also sporting more modern styling, improved aerodynamics, and greater luggage capacity. These dimensional enhancements reflect BMW's commitment to evolving the X4 towards a more spacious, luxurious, and performance-oriented model.

When compared to competitors like the Audi Q5 and Mercedes-Benz GLC, the BMW X4 (G02) holds its own in terms of size and cargo flexibility. The Q5 typically measures around 4663 mm (183.5 inches) in length and 1898 mm (74.7 inches) in width, while the GLC is about 4656 mm (183.3 inches) long and 1890 mm (74.4 inches) wide. The X4 is slightly longer and wider, offering a somewhat more aggressive coupe-like silhouette. Cargo volume is comparable, with all offering around 500 liters of luggage space with seats up and 1400–1600 liters with seats folded. The X4’s sporty design trades some rear headroom for style, a common trait in its segment, but overall it competes well dimensionally and in versatility.

The BMW X4 (G02) comes with a variety of rim sizes, including 7J x 18, 8J x 20, 9.5J x 20, 7.5J x 20, and 9J x 19-inch options depending on the chosen trim and performance package. Tire sizes vary accordingly, including 225/60 R18, 245/45 R20, 275/40 R20, and 245/50 R19. Larger rims and low-profile tires generally improve handling, cornering capability, and road grip but may result in a firmer ride, whereas smaller rims with higher-profile tires prioritize comfort and absorbing road irregularities. BMW offers this range to let buyers balance sportiness with comfort according to individual preferences.