Compare the2023 GMC AcadiaVS 2023 Toyota Sienna

The Acadia Denali’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Sienna doesn’t offer pre-crash pretensioners.

The Acadia has a standard front seat center airbag, which deploys between the driver and front passenger, protecting them from injuries caused by striking each other in serious side impacts. The Sienna doesn’t offer front seat center airbags.

Both the Acadia and the Sienna have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning, available all wheel drive and around view monitors.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the GMC Acadia is safer than the Toyota Sienna:

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH, results indicate that the GMC Acadia is safer than the Toyota Sienna:

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

The Acadia’s corrosion warranty is 1 year longer than the Sienna’s (6 vs. 5 years).

There are over 34 percent more GMC dealers than there are Toyota dealers, which makes it easier should you ever need service under the Acadia’s warranty.

J.D. Power and Associates rated the Acadia third among upper midsize suvs in their 2022 Initial Quality Study. The Sienna isn’t in the top three in its category.

J.D. Power and Associates’ 2022 Initial Quality Study of new car owners surveyed provide the statistics that show that GMC vehicles are better in initial quality than Toyota vehicles. J.D. Power ranks GMC above average in initial quality. With 10 more problems per 100 vehicles, Toyota is rated lower.

The Acadia’s optional 3.6 DOHC V6 produces 65 more horsepower (310 vs. 245) than the Sienna’s 2.5 DOHC 4-cylinder hybrid.

An engine control system that can shut down some of the engine’s cylinders helps improve the Acadia’s fuel efficiency. The Sienna doesn’t offer a system that can shut down part of the engine.

The Acadia FWD’s standard fuel tank has 1.4 gallons more fuel capacity than the Sienna (19.4 vs. 18 gallons), for longer range between fill-ups. The Acadia AWD’s standard fuel tank has 3.7 gallons more fuel capacity than the Sienna (21.7 vs. 18 gallons).

The Acadia has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The Sienna doesn’t offer a cap-less fueling system.

The Acadia stops much shorter than the Sienna:

For better traction, the Acadia AT4’s tires are larger than the largest tires available on the Sienna (255/65R17 vs. 235/50R20).

The GMC Acadia’s wheels have 6 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The Toyota Sienna only has 5 wheel lugs per wheel.

The Acadia has a standard easy tire fill system. When inflating the tires, the vehicle’s integrated tire pressure sensors keep track of the pressure as the tires fill and tell the driver when the tires are inflated to the proper pressure. The Sienna doesn’t offer vehicle monitored tire inflation.

The Acadia offers an available driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads or off-road. The Sienna’s suspension doesn’t offer adjustable shock absorbers.

For greater off-road capability the Acadia has a greater minimum ground clearance than the Sienna (7.2 vs. 6.3 inches), allowing the Acadia to travel over rougher terrain without being stopped or damaged. The Acadia’s minimum ground clearance is .3 inch higher than on the Sienna 25th Anniversary Edition (7.2 vs. 6.9 inches).

The GMC Acadia may be more efficient, handle and accelerate better because it weighs about 200 to 450 pounds less than the Toyota Sienna.

The Acadia is 10.3 inches shorter than the Sienna, making the Acadia easier to handle, maneuver and park in tight spaces. The Acadia is 10.7 inches shorter than the Sienna XSE/25th Anniversary Edition.

The front grille of the Acadia FWD 4 cyl. uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Sienna doesn’t offer active grille shutters.

The Acadia uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The Sienna doesn’t offer active noise cancellation.

The Sienna’s spare tire is stored in the cargo area, where it diminishes the useable cargo capacity and interferes with loading and unloading. The Acadia’s spare is out of the way under the trunk floor.

Pulling a handle automatically lowers the Acadia’s second row seats, to make changing between passengers and cargo easier. The Sienna doesn’t offer automatic folding seats.

Maximum trailer towing in the Toyota Sienna is limited to 3500 pounds. The Acadia offers up to a 4000 lbs. towing capacity.

The Acadia uses gas struts to support the hood for easier service access. The Sienna uses a prop rod to support its heavy hood. It takes two hands to open the hood and set the prop rod, the prop rod gets in the way during maintenance and service, and the prop rod could be knocked out, causing the heavy hood to fall on the person maintaining or servicing the car.

The Acadia offers a remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The Sienna doesn’t offer a remote starting system.

In case you lock your keys in your vehicle, or don’t have them with you, you can let yourself in using the Acadia’s available exterior PIN entry system. The Sienna doesn’t offer an exterior PIN entry system.

The Acadia’s speed-sensitive wipers speed up when the vehicle does, so that the driver doesn’t have to continually adjust the speed of the wipers. The Sienna’s standard manually variable intermittent wipers have to be constantly adjusted.

Consumer Reports® recommends both the GMC Acadia and the Toyota Sienna, based on reliability, safety and performance.

The GMC Acadia outsold the Toyota Sienna by 69% during 2020.