Every published dimension, weight and capacity for the 2027 GMC Acadia, sourced and put in one place. The short version: 203.96 inches long on a 120.9-inch wheelbase, 6,173 lbs GVWR, 97.51 cu ft of maximum cargo volume, and one 2.5L Turbo four-cylinder making 328 horsepower across all four trims.

Three of these numbers move by trim rather than staying fixed across the lineup, and they are the three worth checking against your own driveway and garage: height, width and ground clearance. The AT4 is the outlier on all three.

2027 GMC Acadia Engine Specifications

One powertrain, four trims, no options to weigh.

Specification	Value
Engine	2.5L Turbo four-cylinder
Horsepower	328 hp, all trims
Torque	326 lb-ft
Transmission	8-speed automatic
Drivetrain	FWD standard; AWD available. AT4 is AWD only
Fuel	Regular unleaded
Maximum trailering	5,000 lbs, standard Trailering Package

2027 GMC Acadia Exterior Dimensions

Dimension	Elevation	AT4	Denali / Denali Ultimate
Overall length	203.96 in, all trims
Wheelbase	120.9 in, all trims
Height	70.97 in	72.03 in	71.44 in
Width, excluding mirrors	79.56 in	79.95 in	79.56 in
Width, with mirrors	87.9 in, all trims
Ground clearance	6.77 in	7.75 in	7.30 in

2027 GMC Acadia Interior Dimensions and Cargo

Measurement	Value
Front head room	42.6 in
Front leg room	44.28 in
Front shoulder room	62.0 in
Second-row head room	40.0 in
Second-row leg room	41.5 in
Second-row shoulder room	62.0 in
Cargo behind third row	23.00 cu ft
Cargo behind second row	57.30 cu ft
Cargo behind first row	97.51 cu ft

Seating is up to eight on the Elevation with its second-row bench, and seven on AT4, Denali and Denali Ultimate with captain's chairs. Third-row seating is standard on all four.

2027 GMC Acadia Weights and Capacities

Rating	Value
Gross vehicle weight rating	6,173 lbs
Maximum trailering	5,000 lbs, standard Trailering Package
Seating capacity	7 or 8, depending on trim

2027 GMC Acadia Wheels and Tires

Trim	Wheels
Elevation	18-inch Grazen Metallic painted aluminum
AT4	18-inch dark machined aluminum, all-terrain tires
Denali	20-inch machined aluminum, Pearl Nickel finish
Denali Ultimate	22-inch machined aluminum, After Midnight Metallic finish

The Elevation Premium Package moves the Elevation to 20-inch aluminum wheels, and the Elevation Black Edition to 22-inch gloss-black. Gravel county roads chew tires and alignment on a schedule that has nothing to do with the maintenance minder, which is worth remembering before choosing the 22s if your last mile is unpaved.

Fuel Economy and Tank Capacity

Every 2027 Acadia runs on regular unleaded. Tank capacity depends on drivetrain: 19.3 gallons with front-wheel drive and 21.7 gallons with all-wheel drive, so the all-wheel-drive car carries 2.4 gallons more before you have stopped anywhere. Current EPA ratings for any model year are published at fueleconomy.gov.

Key Features by Trim

Standard on every 2027 Acadia: the 15-inch Premium GMC Infotainment System with Google built-in and Google Gemini, the 11-inch Driver Information Center, the Bose Premium 12-speaker audio system, wireless Apple CarPlay and Android Auto, remote start, heated front seats, a heated steering wheel, heated mirrors, roof rails, three rows of seating and the Trailering Package.

By trim: the AT4 adds Active Torque Control all-wheel drive, an off-road tuned suspension, a lifted ride height, steel skid plates and red recovery hooks. The Denali adds Super Cruise with a three-year OnStar One plan, leather-appointed first and second-row seats, an 8-inch Head-Up Display and power-folding third-row seats. The Denali Ultimate adds full-leather massaging front seats, a panoramic sunroof and the Bose 16-Speaker Performance Series system.

Safety Equipment

Over 19 safety and driver assistance technologies are standard on all four trims: Enhanced Automatic Emergency Braking, Front Pedestrian and Bicyclist Braking, Blind Zone Steering Assist, Forward Collision Alert, Adaptive Cruise Control, Lane Keep Assist with Lane Departure Warning, HD Surround Vision, Following Distance Indicator, IntelliBeam, Rear Park Assist, Safety Alert Seat, Rear Cross Traffic Braking, Intersection Automatic Emergency Braking, Rear Pedestrian Alert, Side Bicyclist Alert, Reverse Automatic Braking, Traffic Sign Recognition, Teen Driver and Rear Camera Mirror. Up to 10 camera views are available, with nine on the Elevation. The Denali Ultimate adds Enhanced Automatic Parking Assist and Driver Attention Assist.

Warranty Coverage

Coverage	Term
Bumper-to-bumper limited	3 years / 36,000 miles
Powertrain limited	5 years / 60,000 miles
Rust-through protection	6 years / 100,000 miles
First maintenance visit	Covered within the first 12 months

What These Specs Mean in Practice

At just under seventeen feet, the Acadia is a full foot and a half longer than a compact SUV, and that shows up in a downtown parking space long before it shows up on the highway. The 120.9-inch wheelbase is what makes the second row genuinely comfortable for adults at 41.5 inches of leg room rather than a compromise.

Height is the specification most likely to surprise someone. The AT4 stands 72.03 inches tall against the Elevation's 70.97, which is worth a tape measure against an older garage door or a parking deck clearance bar before you commit to the trim. Width is effectively the same on three of the four at 79.56 inches excluding mirrors, and 87.9 inches with the mirrors out is the number that matters in a single-car bay.

Ground clearance is the one that changes how the car behaves on the road out toward the forest. The AT4's 7.75 inches is a full inch over the Elevation, and the grades running out toward the Ouachita National Forest are short but steep. The 6,173-lb GVWR is the ceiling on everything the vehicle carries at once, and it is why five adults plus a full cargo bay is a different proposition than five adults alone. Drivers come from Arkadelphia, Hope and Bryant, and from Benton, Malvern and El Dorado, to put a tape measure on these cars rather than trust a spec sheet, which is the right instinct. Highway 7 south out of town is the drive where the wheelbase and the seat dimensions stop being numbers.

2027 GMC Acadia Specifications FAQ

How long is the 2027 GMC Acadia?

203.96 inches across all four trims, on a 120.9-inch wheelbase.

What is the ground clearance of the 2027 GMC Acadia?

The Elevation has 6.77 inches, the Denali and Denali Ultimate have 7.30 inches, and the AT4 has 7.75 inches.

What is the GVWR of the 2027 GMC Acadia?

6,173 lbs.

How big is the fuel tank on a 2027 GMC Acadia?

19.3 gallons on front-wheel-drive models and 21.7 gallons on all-wheel-drive models.

Will a 2027 GMC Acadia fit in a standard garage?

It is 203.96 inches long and 87.9 inches wide with the mirrors out. Height is the figure to check: 70.97 inches on the Elevation, 71.44 on the Denali trims and 72.03 on the AT4.

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