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BMW X7 vs Porsche Cayenne

2026 BMW X7 vs 2026 Porsche Cayenne — two standard SUVs compared on efficiency, size, safety and reliability.

BMW X7

2026 BMW X7

Standard Sport Utility Vehicle 4WDAWD/4WDHybrid/EV
VS3 – 4Porsche Cayenne wins 4 of 7 categories
Porsche Cayenne

2026 Porsche Cayenne

Standard Sport Utility Vehicle 4WDAWD/4WD

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The short version

The BMW X7 is more fuel-efficient: 23 vs 19 MPG combined in its best version.

That works out to about $800 a year less in fuel for the BMW X7 (EPA estimate, 15,000 miles).

The BMW X7 is the bigger car, about 10 inches longer.

Across all model years since 2005, the Porsche Cayenne has had fewer recall campaigns (28 vs 33).

The two cars

The 2026 BMW X7 is a standard SUV offered with 2 engines (3.0L 6-cyl turbo and 4.4L 8-cyl turbo), including a hybrid version and all-wheel drive. It measures about 204 inches long and 79 inches wide on a 122-inch wheelbase, with a curb weight of roughly 6,089 lb (M60i 4dr SUV).

The 2026 Porsche Cayenne is a standard SUV offered with 2 engines (3.0L 6-cyl turbo and 4.0L 8-cyl turbo) and all-wheel drive. It measures about 194 inches long and 78 inches wide on a 114-inch wheelbase, with a curb weight of roughly 4,376 lb (Base / S 4dr SUV).

Buying used? The 2022 X7 and the 2018 Cayenne have the fewest problems in our data; avoid the 2020 X7 and the 2019 Cayenne.

Basics

Standard Sport Utility Vehicle 4WD
Class
Standard Sport Utility Vehicle 4WD
Hybrid
Fuel
Premium Gasoline
3.0L 6-cyl turbo, 4.4L 8-cyl turbo
Engines
3.0L 6-cyl turbo, 4.0L 8-cyl turbo
All-Wheel Drive
Drivetrain
All-Wheel Drive

Efficiency

23 MPG
Best combined MPG
19 MPG
21 city
City / highway MPG (best)
17 city
$3,550
Fuel cost per year (EPA)
$4,350

Performance & space

523 hp
Horsepower (most powerful)
493 hp
–
Seats (most)
4
203.5 in
Length
193.7 in
78.7 in
Width
78 in
72 in
Height
65.7 in
5,772 lb
Curb weight (lightest)
4,376 lb

Safety & reliability

10
Driver-assist features standard
11
2
Recalls (2026)
1
33
Recalls, all years since 2005
28
7
Owner complaints (latest year)
5

Interest

10,389
Wikipedia views, 30 days
30,338

Buying used

2022
Best used year
2018
2020
Year to avoid
2019

Green = clearly better. Prices are not included. How we calculate this →

Which one should you choose?

Choose the BMW X7 if…

  • You want lower fuel bills (23 vs 19 MPG)
  • You want more room (10 in longer)
  • You want a hybrid or electric option

Choose the Porsche Cayenne if…

  • You want something easier to park (10 in shorter)
  • You put reliability history first (28 vs 33 recalls since 2005)

Pros & cons of each

2026 BMW X7

  • Excellent fuel economyUp to 23 MPG combined — 15% better than the average 2026 standard SUV (20 MPG).
  • Hybrid version availableOffered as a hybrid as well as gas.
  • Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.

2026 Porsche Cayenne

  • Lots of standard safety tech4 of 5 key driver aids standard on the versions we checked.
  • Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.

Full 2026 BMW X7 specs →Full 2026 Porsche Cayenne specs →Compare fuel costs for your driving →Compare size & garage fit →