Compare the2025 Buick EnclaveVS 2025 Toyota Sienna

Safety
Warranty
Reliability
Engine
Fuel Economy and Range
Brakes and Stopping
Tires and Wheels
Suspension and Handling
Chassis
Passenger Space
Cargo Capacity
Towing
Servicing Ease
Ergonomics

Safety

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The Enclave 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.

In a Vehicle-to-Vehicle Frontal Crash Prevention 2.0 test conducted by the Insurance Institute for Highway Safety (IIHS), the Buick Enclave achieved a “Good” rating - the highest possible - for its performance in forward collision warning and automatic braking systems, demonstrating its excellent capabilities in preventing collisions. The Toyota Sienna has not been tested.

To deliver safety and visibility under dusty conditions the Buick Enclave’s backup monitor has a standard rear washer to keep the view clear. A camera washer system is only offered on some models of the Toyota Sienna.

Both the Enclave and the Sienna have standard driver and passenger frontal airbags, front and rear side-impact airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, 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, front parking sensors and driver alert monitors.

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

	Enclave	Sienna
OVERALL STARS	5 Stars	4 Stars
	Driver
STARS	5 Stars	3 Stars
HIC	165	215
Neck Injury Risk	20.1%	61%
Neck Stress	178 lbs.	389 lbs.
Neck Compression	2 lbs.	132 lbs.
Leg Forces (l/r)	32/13 lbs.	323/323 lbs.
	Passenger
STARS	4 Stars	4 Stars
Neck Injury Risk	35.9%	48%
Neck Stress	159 lbs.	200 lbs.
Leg Forces (l/r)	160/266 lbs.	448/220 lbs.

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

The Insurance Institute for Highway Safety does 40 MPH moderate front offset crash tests on new cars. In this updated test, results indicate that the Enclave is much safer than the Sienna:

	Enclave	Sienna
Overall Evaluation	GOOD	MARGINAL
Structure	GOOD	GOOD
	Driver Injury Measures
Head/Neck Rating	GOOD	GOOD
Chest Rating	GOOD	GOOD
Thigh/hip Rating	GOOD	GOOD
Thigh Forces L/R	67/90 pounds	292/247 pounds
Leg/foot Rating	GOOD	GOOD
Thigh Forces L/R	67/90 pounds	292/247 pounds
Restraints	GOOD	GOOD
	Rear Passenger Injury Measures
Chest Rating
Thigh Rating	GOOD	GOOD
Restraints	ACCEPTABLE	POOR

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 and into a post at 20 MPH, results indicate that the Buick Enclave is safer than the Toyota Sienna:

	Enclave	Sienna
	Front Seat
STARS	5 Stars	5 Stars
Abdominal Force	73 lbs.	123 lbs.
	Rear Seat
STARS	5 Stars	5 Stars
Hip Force	518 lbs.	542 lbs.
	Into Pole
STARS	5 Stars	5 Stars
HIC	346	371

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

The Buick Enclave has achieved the Insurance Institute for Highway Safety’s (IIHS) highest rating of “Top Safety Pick Plus” for the 2025 model year. This distinction is based on its exceptional performance in IIHS’ rigorous battery of safety tests. Specifically, it earned a “Good” rating in the latest, more stringent moderate overlap front crash test, a “Good” result in the updated side impact test, and an “Acceptable” score in the revised pedestrian crash prevention test. The Sienna is not even a standard “Top Safety Pick” for 2025.

Warranty

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

Reliability

J.D. Power and Associates’ 2024 Initial Quality Study of new car owners surveyed provide the statistics that show that Buick vehicles are better in initial quality than Toyota vehicles. J.D. Power ranks Buick above average in initial quality. With 28 more problems per 100 vehicles, Toyota is rated lower.

Engine

The Enclave’s standard 2.5 turbo 4-cylinder produces 83 more horsepower (328 vs. 245) than the Sienna’s 2.5 DOHC 4-cylinder hybrid.

As tested in Motor Trend the Buick Enclave is faster than the Toyota Sienna:

	Enclave	Sienna
Zero to 60 MPH	7.4 sec	8.4 sec
Quarter Mile	15.6 sec	16.9 sec
Speed in 1/4 Mile	91.9 MPH	72.7 MPH

Fuel Economy and Range

The Enclave 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 Enclave AWD’s standard fuel tank has 3.7 gallons more fuel capacity than the Sienna (21.7 vs. 18 gallons).

The Enclave 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.

Brakes and Stopping

The Enclave stops much shorter than the Sienna:

	Enclave	Sienna
70 to 0 MPH	164 feet	190 feet	Car and Driver
60 to 0 MPH	109 feet	134 feet	Motor Trend

Tires and Wheels

For better traction, the Enclave has larger standard tires than the Sienna (255/55R20 vs. 235/50R20). The Enclave’s optional tires are larger than the largest tires available on the Sienna (275/45R22 vs. 235/50R20).

The Enclave’s standard tires provide better handling because they have a lower 55 series profile (height to width ratio) that provides a stiffer sidewall than the Sienna LE/XLE’s standard 65 series tires. The Enclave’s optional tires have a lower 45 series profile than the Sienna XSE/Platinum’s 50 series tires.

For better ride, handling and brake cooling the Enclave has standard 20-inch wheels. Smaller 17-inch wheels are standard on the Sienna LE/XLE. The Enclave’s optional 22-inch wheels are larger than the 20-inch wheels on the Sienna XSE/Platinum.

The Buick Enclave’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.

Suspension and Handling

The Enclave 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 Enclave has a greater minimum ground clearance than the Sienna (6.8 vs. 6.4 inches), allowing the Enclave to travel over rougher terrain without being stopped or damaged.

Chassis

The front grille of the Enclave 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 Enclave 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.

Passenger Space

The Enclave has 2.5 inches more front headroom, 4 inches more front legroom, .1 inches more rear headroom, 1.6 inches more rear legroom and .9 inches more third row headroom than the Sienna.

Cargo Capacity

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 Enclave’s spare is out of the way under the trunk floor.

Pressing a switch automatically lowers the Enclave’s optional second row seats and pressing a switch automatically lowers or raises the third row seats, to make changing between passengers and cargo easier. The Sienna doesn’t offer automatic folding seats.

Towing

Maximum trailer towing in the Toyota Sienna is limited to 3500 pounds. The Enclave offers up to a 5000 lbs. towing capacity.

Servicing Ease

The Enclave 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.

J.D. Power and Associates surveys of service recipients show that Buick service is better than Toyota. J.D. Power ranks Buick 9th in service department satisfaction (above the industry average). With a 20% lower rating, Toyota is ranked 24th.

Ergonomics

The Enclave’s instruments include an oil pressure gauge and a temperature gauge - which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The Sienna does not have an oil pressure gauge.

The Enclave’s standard Keyless Access allow you to unlock the doors from any outside door handle, open the cargo door, and start the engine, all without removing the key from the pocket or purse. Pushbutton Start standard on the Sienna only offers hands-free access for the ignition, none to unlock the van. Pushbutton Start is not available on the Sienna XLE/XSE/Woodland/Limited/Platinum.

To help drivers avoid possible obstacles, the Enclave Avenir has standard cornering lights to illuminate around corners when the turn signals are activated. The Sienna doesn’t offer cornering lights.

The Buick Enclave has power folding mirrors that offer unparalleled convenience while maneuvering in tight places or parked. With the mirrors folded it’s easier to walk past and help prevent parking damage. The mirrors can be quickly unfolded when the driver is ready to leave. Power folding mirrors are only offered on the Sienna XSE Premium/Limited/Platinum.

The Enclave has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the vehicle heater warms up. A heated steering wheel is only available on the Sienna Platinum.

The Enclave Avenir has standard massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the Sienna.

The Enclave’s optional Enhanced Automatic Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The Sienna doesn’t offer an automated parking system.

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