Jeep Grand Cherokee vs Mazda CX-90: Specs Compared
Also searched as Mazda CX-90 vs Jeep Grand Cherokee specs — both orientations show this same side-by-side comparison.
The Mazda CX-90 is the more efficient of the two: it reaches 26 mpg combined versus 25 mpg for the Jeep Grand Cherokee, a 1 mpg advantage and costs about $200 less per year to fuel.
Across 5 measured categories, the Mazda CX-90 leads in 4. Figures are EPA test data, not manufacturer claims.
2015–2027
Jeep Grand Cherokee
Standard Sport Utility Vehicle 4WD · 87 configurations
2024–2026
Mazda CX-90
Standard Sport Utility Vehicle 4WD · 9 configurations
Head-to-head specifications
| Metric | Jeep Grand Cherokee | Mazda CX-90 |
|---|---|---|
| Best combined MPG | 25 mpg | 26 mpg ✓ |
| Best city MPG | 23 mpg | 24 mpg ✓ |
| Best highway MPG | 30 mpg ✓ | 28 mpg |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $2,650 | $2,450 ✓ |
| Lowest CO2 output | 177 g/mi | 159 g/mi ✓ |
| Engines offered | SIDI, 3.6, SIDI; PHEV, 5.7 | SIDI; PHEV, SIDI; Mild Hybrid |
| Transmissions | Automatic 8-spd | Automatic (S8) |
| Drivetrains | Rear-Wheel Drive, All-Wheel Drive, 4-Wheel Drive | 4-Wheel Drive |
| Fuel types | Regular, Regular Gas and Electricity, Midgrade | Premium and Electricity, Premium, Regular |
| EPA class | Standard Sport Utility Vehicle 4WD | Standard Sport Utility Vehicle 4WD |
| Years covered | 2015–2027 | 2024–2026 |
| Configurations on record | 87 | 9 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Jeep Grand Cherokee vs Mazda CX-90 dimensions and size
The Mazda CX-90 is 7.5 inches longer than the Jeep Grand Cherokee on a wheelbase 6.3 inches longer, and 582 lbs lighter. At over 200 inches, the larger of the two is past the comfortable limit of a standard 192-inch single garage bay once you allow walking room.
| Dimension | Jeep Grand Cherokee (2026) | Mazda CX-90 (2026) | Difference |
|---|---|---|---|
| Length | 193.3 in | 200.8 in | 7.5 in |
| Width (excl. mirrors) | 77.6 in | 77.6 in | identical |
| Height | 70.9 in | 68.1 in | 2.8 in |
| Wheelbase | 116.5 in | 122.8 in | 6.3 in |
| Curb weight | 5,368 lbs | 4,786 lbs | 582 lbs |
Width excludes mirrors; add 8–12 inches for mirrors out. Figures are for the newest model year on record for each vehicle. See both drawn to scale.
Jeep Grand Cherokee vs Mazda CX-90: what the numbers mean
Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Mazda CX-90 burns about $2,450 of fuel annually against $2,650 for the Jeep Grand Cherokee. That $200 yearly gap compounds to roughly $1,000 over five years and $1,600 over eight — often more than the price difference between two trims of the same vehicle, and the single largest running-cost line item separating these two.
City versus highway split: the Mazda CX-90 is the stronger commuter at 24 mpg city, while the Jeep Grand Cherokee pulls ahead on the interstate at 30 mpg highway. If most of your driving is stop-and-go traffic the city figure is the one to weigh; for long-distance highway mileage the reverse is true, and the two vehicles effectively swap places depending on how you drive.
Powertrain choice: the Jeep Grand Cherokee is recorded with 4 distinct engine configurations (SIDI, 3.6, SIDI; PHEV), the Mazda CX-90 with 2 (SIDI; PHEV, SIDI; Mild Hybrid). Across 87 recorded Jeep Grand Cherokee configurations and 9 for the Mazda CX-90, the wider the engine spread the more the real-world fuel efficiency depends on which version you actually buy, so check the specific model year and drivetrain rather than the headline number.
Drivetrain and class: the Jeep Grand Cherokee is offered with Rear-Wheel Drive, All-Wheel Drive, 4-Wheel Drive, the Mazda CX-90 with 4-Wheel Drive. All-wheel drive typically costs one to two mpg combined against the same vehicle in front- or rear-wheel drive, which is worth remembering when the gap between these two is small. The EPA classes them as Standard Sport Utility Vehicle 4WD and Standard Sport Utility Vehicle 4WD respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.
Tailpipe emissions: at their cleanest configurations the Mazda CX-90 emits 159 g/mile of CO2 versus 177 g/mile for the Jeep Grand Cherokee. Emissions track fuel consumption almost exactly, so the cleaner vehicle here is also the cheaper one to fuel.
Grand Cherokee vs CX-90: common questions
Which is better on gas, the Jeep Grand Cherokee or the Mazda CX-90?
The Mazda CX-90 is the more efficient of the two: it reaches 26 mpg combined versus 25 mpg for the Jeep Grand Cherokee, a 1 mpg advantage and costs about $200 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the Mazda CX-90 runs about $2,450 a year in fuel at its most efficient configuration, versus about $2,650 for the Jeep Grand Cherokee — a difference of roughly $200 per year.
What engines do the Grand Cherokee and CX-90 offer?
Jeep Grand Cherokee: SIDI, 3.6, SIDI; PHEV, 5.7. Mazda CX-90: SIDI; PHEV, SIDI; Mild Hybrid.
Are they in the same vehicle class?
Yes — the EPA classifies both the Jeep Grand Cherokee and the Mazda CX-90 as Standard Sport Utility Vehicle 4WD, so they compete directly.
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Comparison id: jeep-grand-cherokee-vs-mazda-cx-90