2021 BMW X7 — Full Specifications
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The 2021 BMW X7 is an SUV offered with 2 engines (3L 6-cyl turbo, 4.4L 8-cyl turbo). Its most fuel-efficient configuration returns around 20 mpg (UK) / 17 mpg (US EPA) combined, with 20–25 mpg (UK) across all configurations. A hybrid version is also listed by EPA (3L 6-cyl turbo), returning around 25 mpg (UK) combined. Owners often keep a BMW X7 workshop manual to hand for servicing and repairs.
Compared with the 2020 BMW X7: Fuel economy slips from 26 to 20 mpg (UK) combined on the most efficient configuration. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine (most efficient) | 4.4L 8-cyl turbo |
|---|---|
| Engine options | 3L 6-cyl turbo · 4.4L 8-cyl turbo |
| Transmission (most efficient) | Automatic (S8) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | All-Wheel Drive |
| Body Style | SUV |
| Fuel Economy (UK) | 20 combined / 18 urban / 25 extra-urban mpg |
| Fuel Economy (US EPA) | 17 combined / 15 city / 21 highway mpg |
| CO₂ Emissions | 319 g/km |
| EPA Greenhouse Gas Score | 3 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $4,850 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2021 BMW X7 across 2 engines (3L 6-cyl turbo, 4.4L 8-cyl turbo). Combined fuel economy ranges from 17 to 21 mpg (US), or 20 to 25 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 3L 6-cyl turbo (Hybrid) | Automatic (S8) | All-Wheel Drive | 25 | 21 (19/24) | 256 | $3,900 |
| 4.4L 8-cyl turbo | Automatic (S8) | All-Wheel Drive | 20 | 17 (15/21) | 319 | $4,850 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
Owner Essentials for the 2021 BMW X7
Running Costs: 2021 BMW X7
Covering around 8,000 miles a year in a 2021 BMW X7 at 20 mpg combined, expect roughly 1,818 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $4,850 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Planning a road trip? Grab a road trip packing list. Only need this car occasionally? See our buy vs rent comparison.
2021 BMW X7 Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
Recalls & Owner Complaints (NHTSA)
NHTSA lists 9 safety recall campaigns that include the 2021 BMW X7 (as of 6 October 2026). Most affected areas: Seats (2), Visibility (1), Back over prevention (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
- Seats — campaign 22V670000, reported 7 September 2022. Risk: In a crash, the seat backrest may not fully lock, increasing the risk of injury.
- Visibility — campaign 22V267000, reported 20 April 2022. Risk: A sunroof that closes without the key fob present inside the vehicle can increase the risk of injury.
- Seats — campaign 21V156000, reported 10 March 2021. Risk: In the event of a crash, the head restraints could detach, and increase the risk of injury.
- Back over prevention — campaign 21V096000, reported 19 February 2021. Risk: If the driver relies on only the rearview camera image, the missing or reduced rearview image view can increase the risk of a crash or injury.
Showing the 4 most recent of 9 campaigns.
Owners have filed 47 complaints with NHTSA about the 2021 BMW X7. The most-reported areas are Engine (11), Power train (11), Electrical system (8). Complaints include 2 reported fires, 1 reported injury. That is close to the median of 46 complaints across the 8 BMW X7 model years in our data.
Used-buyer checklist for the 2021 BMW X7
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Seats (2 recall campaigns · 5 owner complaints) — Check seat adjusters, head restraints and seat-mounted sensors work, and confirm seat recalls were completed.
- Engine (11 owner complaints) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
- Transmission & drivetrain (11 owner complaints) — On the test drive, watch for hesitation, jerking or slipping between gears and ask for transmission service history.
- Visibility (1 recall campaign) — Check wipers, washers and demisters work properly.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
How does the BMW X7 compare to similar SUVs? For context, SUVs in our database average around 27 mpg (UK) combined — this model's 20 mpg figure is 7 mpg below that average. Its 319 g/km CO₂ figure is 66 g/km higher than the 253 g/km average for SUVs on this site. This comparison is based on 1824 SUVs in our dataset.
BMW models in our database average about 28 mpg (UK) combined on their most efficient configuration; the 2021 BMW X7's 20 mpg is 8 mpg below that make average. Its 319 g/km CO₂ figure is 79 g/km higher than the 240 g/km BMW average.
Of the 8 BMW X7 model years we cover, the 2021 ranks 7th for combined fuel economy on its best configuration (20 mpg UK combined, against a high of 28 mpg). See every BMW X7 year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2021 BMW X7
Frequently Asked Questions
What engine does the 2021 BMW X7 have?
EPA lists 2 engines for the 2021 BMW X7: 3L 6-cyl turbo, 4.4L 8-cyl turbo. The most fuel-efficient configuration pairs the 4.4L 8-cyl turbo with a automatic (s8).
What is the fuel economy of the 2021 BMW X7?
The most efficient configuration returns around 20 mpg (UK) combined, or 17 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 20 to 25 mpg. The hybrid version returns around 25 mpg (UK) combined.
How much does the 2021 BMW X7 cost to fuel per year?
The US EPA estimates about $4,850 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
Does the 2021 BMW X7 have any recalls?
NHTSA lists 9 safety recall campaigns that include the 2021 BMW X7 (as of 6 October 2026). Most affected areas: Seats (2), Visibility (1), Back over prevention (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
What are the most common problems reported for the 2021 BMW X7?
Among the 47 owner complaints filed with NHTSA, the most-reported areas are Engine (11 complaints), Power train (11 complaints), Electrical system (8 complaints). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
Is the BMW X7's fuel economy good for an SUV?
It returns around 20 mpg (UK) combined, against a same-body-style average of roughly 27 mpg among the SUVs we track.