The BMW X7 (G07) 40i xDrive Steptronic, produced from 2018 to 2020, represents BMW’s entry into the full-size luxury SUV segment with a focus on combining spaciousness, performance, and technology. Positioned as the base engine option within the G07 X7 lineup, the 40i served as the volume seller, offering a balance between cost and capability compared to the higher-performance M50i and later diesel variants. It was designed to compete directly with vehicles like the Mercedes-Benz GLS, Audi Q7, and Land Rover Range Rover, aiming to capture a significant share of the North American and global luxury SUV market.
Technical Specifications
| Brand | BMW |
| Model | X7 |
| Generation | X7 (G07) |
| Type (Engine) | 40i (340 Hp) xDrive Steptronic |
| Start of production | 2018 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 6-7 |
| Doors | 5 |
| Fuel consumption (combined) | 8.7-9.0 l/100 km (27 – 26.1 US mpg) |
| CO2 emissions | 198-205 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.1 sec |
| Acceleration 0 – 62 mph | 6.1 sec |
| Acceleration 0 – 60 mph | 5.8 sec |
| Maximum speed | 245 km/h (152.24 mph) |
| Emission standard | Euro 6d-TEMP |
| Weight-to-power ratio | 6.8 kg/Hp, 146.6 Hp/tonne |
| Weight-to-torque ratio | 5.2 kg/Nm, 194 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 | 2320 kg (5114.72 lbs.) |
| Max. weight | 3155 kg (6955.58 lbs.) |
| Max load | 835 kg (1840.86 lbs.) |
| Trunk (boot) space – minimum | 326 l (11.51 cu. ft.) |
| Trunk (boot) space – maximum | 2120 l (74.87 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%) | 2200 kg (4850.17 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 140 kg (308.65 lbs.) |
| Length | 5151 mm (202.8 in.) |
| Width | 2000 mm (78.74 in.) |
| Width including mirrors | 2218 mm (87.32 in.) |
| Height | 1805 mm (71.06 in.) |
| Wheelbase | 3105 mm (122.24 in.) |
| Front track | 1684 mm (66.3 in.) |
| Rear (Back) track | 1705 mm (67.13 in.) |
| Front overhang | 874 mm (34.41 in.) |
| Rear overhang | 1172 mm (46.14 in.) |
| Ride height (ground clearance) | 221 mm (8.7 in.) |
| Drag coefficient (Cd) | 0.33 |
| Minimum turning circle (turning diameter) | 13.0 m (42.65 ft.) |
| Approach angle | 25° |
| Departure angle | 22.2° |
| Ramp-over (brakeover) angle | 19.8° |
| Wading depth | 500 mm (19.69 in.) |
| 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 | Independent multi-link suspension |
| 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 | 275/50 R20 113W XL |
| Wheel rims size | 8.5J x 20 |
INTRODUCTION
The BMW X7 40i xDrive Steptronic, launched in 2018, marked BMW’s foray into the burgeoning full-size luxury SUV market. Built on the G07 platform, which also underpins the X5 and X6, the X7 aimed to provide a more spacious and opulent alternative to BMW’s existing SUV offerings. The 40i variant, powered by the B58 inline-six engine, was positioned as the entry point to the X7 range, offering a compelling blend of performance, comfort, and features. It quickly became a popular choice for families and buyers seeking a luxurious and capable SUV.
Powertrain & Engine Architecture
At the heart of the X7 40i lies the B58B30C 3.0-liter inline-six engine. This engine is a member of BMW’s modular engine family and is renowned for its smooth power delivery and efficiency. It utilizes direct fuel injection, a single twin-scroll turbocharger, and BMW’s Valvetronic variable valve timing and variable valve lift technology. The B58 produces 340 horsepower at 5500-6500 rpm and 450 Nm (331.9 lb-ft) of torque between 1500 and 5200 rpm. The engine is longitudinally mounted, driving all four wheels through BMW’s xDrive all-wheel-drive system. Paired with the B58 is the ZF 8HP70 eight-speed automatic transmission, known for its smooth and quick shifts. This transmission is controlled by BMW’s Steptronic system, offering both automatic and manual shift modes. The transmission’s gear ratios are tuned for a balance of acceleration and fuel economy, with a relatively tall final drive ratio to enhance highway cruising.
Driving Characteristics
The X7 40i delivers a refined and comfortable driving experience. While not as overtly sporty as some of BMW’s smaller SUVs, the 40i provides ample power for everyday driving and highway passing. The 0-60 mph sprint takes approximately 5.8 seconds, making it competitive within its class. The eight-speed automatic transmission contributes to smooth acceleration and helps keep the engine in its optimal power band. Compared to the more powerful X7 M50i, the 40i feels less urgent off the line, but the difference is often negligible in real-world driving scenarios. The xDrive all-wheel-drive system provides excellent traction in various weather conditions. The suspension is tuned for comfort, absorbing bumps and imperfections in the road with ease. However, it still maintains a degree of body control, preventing excessive roll in corners.
Equipment & Trim Levels
The X7 40i came standard with a generous array of features, including leather upholstery, power-adjustable front seats, a panoramic sunroof, a 12.3-inch touchscreen infotainment system with iDrive controller, and a suite of advanced driver-assistance systems such as automatic emergency braking, lane departure warning, and blind-spot monitoring. Optional extras included upgraded leather options, massaging front seats, a rear-seat entertainment system, and a Bowers & Wilkins Diamond Surround Sound System. Trim levels were relatively simple, with most options being added individually. The interior design emphasized luxury and spaciousness, with high-quality materials and a modern aesthetic.
Chassis & Braking
The X7 40i features a double-wishbone front suspension and an independent multi-link rear suspension. This setup provides a comfortable ride and good handling characteristics. The suspension is electronically controlled, allowing the driver to adjust the ride height and damping settings. The X7 40i is equipped with ventilated disc brakes on all four wheels. The braking system is enhanced by ABS, dynamic stability control, and electronic brake-force distribution. The large brake rotors and powerful calipers provide ample stopping power, even when the vehicle is fully loaded.
Market Reception & Comparison
The BMW X7 40i was generally well-received by automotive critics. It was praised for its spacious interior, luxurious features, and comfortable ride. However, some critics noted that its handling was not as sharp as some of its competitors. Compared to the X7 M50i, the 40i offered a more affordable entry point into the X7 range, but it lacked the M50i’s extra power and performance. Fuel economy was respectable for a vehicle of its size, averaging around 26-27 mpg on the highway. Reliability has been generally good, with few widespread issues reported.
Legacy
The BMW X7 40i established BMW as a serious contender in the full-size luxury SUV segment. The B58 engine has proven to be a reliable and durable powerplant, and the ZF 8HP70 transmission is known for its longevity. On the used car market, the X7 40i remains a popular choice, offering a compelling combination of luxury, space, and value. While newer X7 models have been introduced, the first-generation 40i continues to be a desirable option for buyers seeking a well-equipped and capable luxury SUV.
