BMW X5 40i

Core summary

The G05 X5 xDrive40i is a six-cylinder petrol SUV, not a four-litre V8. Early and 2023-updated versions need separate specification checks.

The G05 X5 40i is a large luxury SUV centred on a turbocharged petrol straight-six. It is neither the V8 alternative nor the plug-in hybrid. That creates a clear use case for owners who want the X5 format but do not have a reason to organise regular charging.

Cariary would judge the car as a complete family vehicle. Engine character is part of its appeal, but parking fit, passenger comfort, luggage access and the cost of its equipment will affect far more ordinary days than a brief acceleration test.

History & generations

The fourth-generation G05 X5 was introduced in 2018 and substantially updated in 2023. This guide covers that generation, not every vehicle subsequently sold under the X5 name. Early and updated cars should be researched separately.

The gallery shows a dark G05 xDrive40i. Its visible front and rear design should not be used to assign every later update to the photographed example. Confirm build date and factory specification when deciding which powertrain and cabin information applies.

Body, platform & design

The photographs show the G05 from the front three-quarter and rear three-quarter angles, including xDrive40i badging. The relatively upright body is a major reason to compare it with the more sloping X6 rather than choosing between them solely on appearance.

At a viewing, test luggage loading and the tailgate arrangement with your own equipment. Check the space around the car in a garage, not simply whether the body fits between two lines. Large-SUV convenience can disappear in an unsuitable parking environment.

Engine & drivetrain

BMW's 2018 UK reference rates the 3.0-litre inline-six at 250 kW/340 PS and 450 Nm. The 2023 global update gives the 40i 280 kW/381 PS with 48-volt assistance. Both use an eight-speed automatic and xDrive. These dated metric specifications must not be mixed with other national ratings.

The 40i badge does not mean four litres. Nor does mild-hybrid assistance make the later 40i a plug-in model. Test smooth response and ask for records of any engine or gearbox software changes.

Trim differences

Distinguish engine choice from appearance and chassis equipment. An M Sport 40i is not an X5 M, and air suspension or other sophisticated chassis features should be verified on the individual build rather than assumed from photographs.

Compare the features that suit the vehicle's work: seats, cameras, lights, towing equipment where required and appropriate wheels. A high original options bill is not the same as a useful specification for the next owner.

Interior & seating

Treat the X5 primarily as a five-seat luxury SUV and verify any claimed additional seating against the actual car. Do not assume every G05 configuration offers the same capacity. Test rear access, child-seat fit and seat folding with the intended occupants and luggage.

The 2023 update changed the cabin presentation, so compare controls directly before choosing an earlier or later example. Screen size is not a substitute for checking how comfortably you can operate everyday functions while parked.

Efficiency & range

A six-cylinder petrol X5 needs a realistic fuel budget. Mild-hybrid equipment does not allow the 40i to be treated like a plug-in with a daily charging benefit. Compare a 45e or 50e only after including electricity and the likelihood that charging will actually happen.

Short journeys, traffic, tyres and heavy loads affect consumption. A motorway trip-computer image should not decide the purchase. Estimate costs around the use the car will receive over a full year.

Safety & equipment

Check the condition and specification of tyres and brakes before focusing on driver-assistance equipment. The size and performance of the X5 make ordinary maintenance particularly important. Verify cameras and sensors and ask about calibration after repairs.

For towing, obtain the exact vehicle's permitted limits and fitted equipment rather than borrowing a maximum from another engine version. Check campaigns by VIN and have any warning messages investigated before taking ownership.

Strengths

The 40i offers a distinct middle path within the X5 idea: six-cylinder petrol propulsion without a V8 or a plug-in charging dependency. It is persuasive when the owner values that engine format and regularly uses the vehicle's passenger and luggage capability.

Its relatively upright body gives it a practical reason to exist alongside the X6. A well-selected 40i can concentrate the budget on comfort and condition rather than an engine upgrade that adds little to the owner's normal travel.

Considerations

A used price does not reduce the replacement cost of luxury-SUV hardware. Obtain estimates for tyres, brakes and any fitted suspension equipment, and keep funds available beyond the purchase. A complex option is a benefit only if you value it and can maintain it.

Have an independent specialist inspect cooling-system condition, leaks, diagnostic history, suspension and accident repairs. Investigate uneven stance or unusual noises instead of accepting a generic explanation. These are practical checks, not a declaration that every G05 suffers a particular fault.

Recommended use

The clearest role is comfortable family travel with substantial luggage, where the owner specifically wants a petrol six-cylinder. It is less compelling when nearly every trip is solo through narrow streets and the cabin or carrying ability is seldom used.

If charging is dependable, compare the appropriate X5 plug-in hybrid on total use. If it is not, the 40i may be the more straightforward choice. Neither conclusion should be reached solely from a brochure economy figure.

Rivals & related

The Mercedes-Benz GLE, Audi Q7 and Porsche Cayenne provide useful alternatives at a comparable age and budget. Their seating, engine and suspension configurations differ, so test the actual versions rather than comparing only model names.

The BMW X6 40i is the style-led internal alternative. An X3 may be enough if its cabin and luggage area meet the requirement. Buying less size can be a better decision than selecting a larger SUV merely because depreciation has made it affordable to purchase.

FAQ

Q: Is 40i a four-litre V8?
A: No. The G05 40i uses a 3.0-litre inline-six.

Q: Can I plug in the mild-hybrid 40i?
A: No. It is not the plug-in hybrid version.

Q: Are early and updated cars equally powerful?
A: No. The cited 2018 and 2023 specifications differ.

Q: Does every X5 have extra rear seats?
A: No. Verify the configuration of the individual car.

Sources & updates

Manufacturer references below identify the dated generations and specifications used here. Buying assessments are Cariary editorial analysis, not a claimed first-hand road test or a diagnosis of an individual vehicle. Photographs carry their own credits and licences. Confirm exact ratings, equipment and campaign status for the production date and original market of the car you are considering.

• BMW X5 G05 launch, UK 2018 →
• BMW X5 and X6 update, global 2023 →
• Photograph — Dark BMW X5 xDrive40i G05 front three-quarter view →Damian B Oh; CC BY-SA 4.0

Last editorial review: September 20, 2026. Specifications remain market- and model-year-specific.