The BMW X5 (G05) 40i xDrive Steptronic, produced from 2018 to 2020, represents a significant iteration of BMW’s popular Sports Activity Vehicle (SAV). Positioned as a mid-range offering within the G05 X5 lineup, it bridged the gap between the entry-level 30i and the performance-oriented M50i models. This variant aimed to deliver a balance of performance, luxury, and efficiency, appealing to buyers seeking a versatile and capable SUV. The G05 generation marked a substantial redesign for the X5, incorporating updated technology, a more refined interior, and improved driving dynamics. It quickly became a competitive force in the luxury SUV segment, particularly in North America and Europe.
Technical Specifications
| Brand | BMW |
| Model | X5 |
| Generation | X5 (G05) |
| Type (Engine) | 40i (340 Hp) xDrive Steptronic |
| Start of production | 2018 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SAV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (combined) | 8.5-8.8 l/100 km (27.7 – 26.7 US mpg, 33.2 – 32.1 UK mpg, 11.8 – 11.4 km/l) |
| CO2 emissions | 193-200 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.5 sec |
| Acceleration 0 – 62 mph | 5.5 sec |
| Acceleration 0 – 60 mph | 5.2 sec |
| Maximum speed | 243 km/h (150.99 mph) |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 6.1 kg/Hp, 165 Hp/tonne |
| Weight-to-torque ratio | 4.6 kg/Nm, 218.4 Nm/tonne |
| Power | 340 Hp @ 5500-6500 rpm |
| Power per litre | 113.4 Hp/l |
| Torque | 450 Nm @ 1500-5200 rpm (331.9 lb.-ft. @ 1500-5200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B58B30C |
| Engine displacement | 2998 cm3 (182.95 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 12.6 l (13.31 US qt | 11.09 UK qt) |
| Kerb Weight | 2060 kg (4541.52 lbs.) |
| Max. weight | 2800 kg (6172.94 lbs.) |
| Max load | 740 kg (1631.42 lbs.) |
| Trunk (boot) space – minimum | 645 l (22.78 cu. ft.) |
| Trunk (boot) space – maximum | 1860 l (65.69 cu. ft.) |
| Fuel tank capacity | 83 l (21.93 US gal | 18.26 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2700 kg (5952.48 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 140 kg (308.65 lbs.) |
| Length | 4922 mm (193.78 in.) |
| Width | 2004 mm (78.9 in.) |
| Width including mirrors | 2218 mm (87.32 in.) |
| Height | 1745 mm (68.7 in.) |
| Wheelbase | 2975 mm (117.13 in.) |
| Front track | 1666 mm (65.59 in.) |
| Rear (Back) track | 1685 mm (66.34 in.) |
| Front overhang | 874 mm (34.41 in.) |
| Rear overhang | 1073 mm (42.24 in.) |
| Ride height (ground clearance) | 214 mm (8.43 in.) |
| Drag coefficient (Cd) | 0.32 |
| Minimum turning circle (turning diameter) | 12.6 m (41.34 ft.) |
| Approach angle | 25.2° |
| Departure angle | 22.3° |
| Ramp-over (brakeover) angle | 20.2° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Double wishbone |
| Rear suspension | Double wishbone |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 255/55 R18 |
| Wheel rims size | 8.5J x 18 |
Powertrain & Engine Architecture
The heart of the X5 40i is BMW’s B58B30C 3.0-liter inline-six engine. This engine is a member of BMW’s modular engine family, known for its smooth power delivery and efficiency. It utilizes direct fuel injection, a single twin-scroll turbocharger, and Double-VANOS variable valve timing for both intake and exhaust. The B58 engine produces 340 horsepower at 5500-6500 rpm and 450 Nm (331.9 lb-ft) of torque between 1500 and 5200 rpm. The engine’s longitudinal mounting and all-wheel-drive configuration contribute to balanced handling. Paired with the engine is BMW’s 8-speed Steptronic automatic transmission. This transmission is renowned for its quick and smooth shifts, and it features adaptive learning to optimize shift points based on driving style. The xDrive all-wheel-drive system intelligently distributes power between the front and rear axles, enhancing traction and stability in various conditions.
Driving Characteristics
The X5 40i xDrive Steptronic delivers a refined and capable driving experience. The 340 hp engine provides ample power for everyday driving and confident passing maneuvers. Acceleration from 0 to 60 mph takes approximately 5.2 seconds. While not as aggressively tuned as the M50i, the 40i offers a satisfying level of performance. The 8-speed automatic transmission contributes to smooth acceleration and efficient cruising. The xDrive system provides excellent grip and stability, particularly in inclement weather. Compared to the base 30i model, the 40i offers a noticeable performance upgrade, while remaining more fuel-efficient than the higher-output M50i. The gear ratios are tuned for a balance of acceleration and fuel economy, with taller gears for highway cruising.
Equipment & Trim Levels
The X5 40i typically came well-equipped as standard. Common features included BMW’s iDrive infotainment system with a 12.3-inch touchscreen display, navigation, Apple CarPlay compatibility, a premium sound system, leather upholstery, power-adjustable front seats with memory function, and a panoramic sunroof. Optional extras included upgraded leather options, massaging seats, a head-up display, adaptive cruise control, and a variety of driver-assistance systems. Trim levels often included packages that bundled popular options together, such as the Premium Package and the Executive Package. Interior color schemes were customizable, and buyers could choose from a range of wood or aluminum trim options.
Chassis & Braking
The G05 X5 utilizes a robust chassis with a double-wishbone suspension setup at both the front and rear. This suspension design contributes to a comfortable ride and precise handling. The 40i model typically featured larger brakes than the base 30i, with ventilated discs at all four corners. Anti-lock braking system (ABS) and dynamic stability control (DSC) were standard features. Available options included adaptive suspension, which allowed drivers to adjust the ride firmness, and air suspension, which provided an even more comfortable and controlled ride. The X5’s steering system is electric power steering, offering precise and responsive steering feel.
Market Reception & Comparison
The BMW X5 40i xDrive Steptronic was generally well-received by automotive critics. It was praised for its balanced performance, luxurious interior, and advanced technology. Compared to competitors such as the Audi Q7 and Mercedes-Benz GLE, the X5 40i was often noted for its engaging driving dynamics and refined powertrain. Fuel economy was considered competitive for its class, averaging around 26-27 mpg in combined driving. Reliability reports have been generally positive, although some owners have reported minor issues with the infotainment system. The 40i offered a compelling alternative to the base 30i, providing a significant performance boost without the higher price tag of the M50i.
Legacy
The B58 engine powering the X5 40i has proven to be a durable and reliable powerplant. The 8-speed Steptronic transmission has also demonstrated good long-term reliability. On the used car market, the 2018-2020 X5 40i remains a popular choice, commanding reasonable prices relative to its features and performance. Regular maintenance, including oil changes and fluid checks, is crucial for ensuring the longevity of this powertrain. The G05 X5 40i represents a well-rounded and capable luxury SUV that continues to appeal to buyers seeking a blend of performance, comfort, and technology.
