GMC Acadia vs Toyota 4Runner: Specs Compared
Also searched as Toyota 4Runner vs GMC Acadia specs — both orientations show this same side-by-side comparison.
The GMC Acadia is the more efficient of the two: it reaches 25 mpg combined versus 23 mpg for the Toyota 4Runner, a 2 mpg advantage and costs about $200 less per year to fuel.
Across 5 measured categories, the GMC Acadia leads in 4. Figures are EPA test data, not manufacturer claims.
2015–2027
GMC Acadia
Standard Sport Utility Vehicle 2WD · 44 configurations
2015–2026
Toyota 4Runner
Standard Sport Utility Vehicle 4WD · 42 configurations
Head-to-head specifications
| Metric | GMC Acadia | Toyota 4Runner |
|---|---|---|
| Best combined MPG | 25 mpg ✓ | 23 mpg |
| Best city MPG | 22 mpg | 23 mpg ✓ |
| Best highway MPG | 29 mpg ✓ | 26 mpg |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $2,450 ✓ | $2,650 |
| Lowest CO2 output | 349 g/mi ✓ | 380 g/mi |
| Engines offered | SIDI | SIDI & PFI; Hybrid, SIDI & PFI, SIDI & PFI; with Stop-Start, 4.0 |
| Transmissions | Automatic 8-spd, Automatic 9-spd, Automatic 6-spd | Automatic (S8), Automatic (S5) |
| Drivetrains | All-Wheel Drive, Front-Wheel Drive | 4-Wheel Drive, Part-time 4-Wheel Drive, Rear-Wheel Drive |
| Fuel types | Regular | Regular |
| EPA class | Standard Sport Utility Vehicle 2WD | Standard Sport Utility Vehicle 4WD |
| Years covered | 2015–2027 | 2015–2026 |
| Configurations on record | 44 | 42 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
GMC Acadia vs Toyota 4Runner dimensions and size
The GMC Acadia is 9.1 inches longer than the Toyota 4Runner on a wheelbase 8.7 inches longer, and 368.2 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 | GMC Acadia (2026) | Toyota 4Runner (2026) | Difference |
|---|---|---|---|
| Length | 203.9 in | 194.9 in | 9.1 in |
| Width (excl. mirrors) | 79.5 in | 78 in | 1.6 in |
| Height | 70.9 in | 73.6 in | 2.8 in |
| Wheelbase | 120.9 in | 112.2 in | 8.7 in |
| Curb weight | 4,502 lbs | 4,870 lbs | 368 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.
GMC Acadia vs Toyota 4Runner: what the numbers mean
Running cost over five years: at the EPA's 15,000-mile-a-year assumption the GMC Acadia burns about $2,450 of fuel annually against $2,650 for the Toyota 4Runner. 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 Toyota 4Runner is the stronger commuter at 23 mpg city, while the GMC Acadia pulls ahead on the interstate at 29 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 GMC Acadia is recorded with 1 distinct engine configuration (SIDI), the Toyota 4Runner with 4 (SIDI & PFI; Hybrid, SIDI & PFI, SIDI & PFI; with Stop-Start). Across 44 recorded GMC Acadia configurations and 42 for the Toyota 4Runner, 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 GMC Acadia is offered with All-Wheel Drive, Front-Wheel Drive, the Toyota 4Runner with 4-Wheel Drive, Part-time 4-Wheel Drive, Rear-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 2WD 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 GMC Acadia emits 349 g/mile of CO2 versus 380 g/mile for the Toyota 4Runner. Emissions track fuel consumption almost exactly, so the cleaner vehicle here is also the cheaper one to fuel.
Acadia vs 4Runner: common questions
Which is better on gas, the GMC Acadia or the Toyota 4Runner?
The GMC Acadia is the more efficient of the two: it reaches 25 mpg combined versus 23 mpg for the Toyota 4Runner, a 2 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 GMC Acadia runs about $2,450 a year in fuel at its most efficient configuration, versus about $2,650 for the Toyota 4Runner — a difference of roughly $200 per year.
What engines do the Acadia and 4Runner offer?
GMC Acadia: SIDI. Toyota 4Runner: SIDI & PFI; Hybrid, SIDI & PFI, SIDI & PFI; with Stop-Start, 4.0.
Are they in the same vehicle class?
The EPA classifies the GMC Acadia as Standard Sport Utility Vehicle 2WD and the Toyota 4Runner as Standard Sport Utility Vehicle 4WD, so they aren't a like-for-like match on size.
More Acadia comparisons
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