Compare the2025 Toyota SiennaVS 2024 Buick Enclave

Safety
Warranty
Reliability
Fuel Economy and Range
Transmission
Brakes and Stopping
Tires and Wheels
Suspension and Handling
Passenger Space
Cargo Capacity
Towing
Ergonomics
Economic Advantages
Recommendations

Safety

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For enhanced safety, the front and middle seat shoulder belts of the Toyota Sienna are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Buick Enclave doesn’t offer height-adjustable front seat belts.

The Toyota Sienna has a standard driver’s side knee airbag mounted low on the dashboard. The knee airbag helps prevent the driver from sliding under the seatbelts or the main frontal airbag; this keeps the driver better positioned during a collision for maximum protection. A knee airbag also helps keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The Enclave doesn’t offer knee airbags.

The Sienna has a standard Secondary Collision Brake, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Enclave doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

Both the Sienna and Enclave have Rear Cross Traffic Alert, but the Sienna has Rear Cross Traffic Braking (automatically applies the brakes) to better prevent a collision when backing near traffic. The Enclave’s Rear Cross Traffic Alert doesn’t automatically brake.

The Sienna’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Enclave doesn’t offer a driver alert monitor.

Both the Sienna and the Enclave have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, 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 Toyota Sienna is safer than the Buick Enclave:

	Sienna	Enclave
	Passenger
STARS	4 Stars	4 Stars
HIC	175	333
Chest Compression	.6 inches	.9 inches
Neck Compression	42 lbs.	51 lbs.

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

	Sienna	Enclave
	Front Seat
STARS	5 Stars	5 Stars
HIC	42	69
Chest Movement	.5 inches	.9 inches
Abdominal Force	123 lbs.	161 lbs.
	Rear Seat
STARS	5 Stars	5 Stars
HIC	52	134
Spine Acceleration	30 G’s	39 G’s
Hip Force	542 lbs.	716 lbs.
	Into Pole
STARS	5 Stars	5 Stars
Max Damage Depth	12 inches	14 inches
Spine Acceleration	31 G’s	34 G’s
Hip Force	499 lbs.	554 lbs.

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

Side impacts caused 23% of all road fatalities in 2018, down from 29% in 2003, when the Insurance Institute for Highway Safety introduced its side barrier test. In order to continue improving vehicle safety, the IIHS has started using a more severe side impact test: 37 MPH (up from 31 MPH), with a 4180-pound barrier (up from 3300 pounds). The results of this newly developed test demonstrates that the Toyota Sienna is safer than the Enclave:

	Sienna	Enclave
Overall Evaluation	GOOD	ACCEPTABLE
Structure	GOOD	MARGINAL
	Driver Injury Measures
Head/Neck	GOOD	GOOD
Neck Tension	201 lbs.	446 lbs.
Torso	GOOD	ACCEPTABLE
Shoulder Deflection	.55 in	1.3 in
Shoulder Force	178 lbs.	312 lbs.
Torso Max Deflection	.83 in	1.5 in
Torso Deflection Rate	6 MPH	6 MPH
Pelvis	GOOD	ACCEPTABLE
Pelvis Force	736 lbs.	1116 lbs.
Head Protection	GOOD	GOOD
	Passenger Injury Measures
Head/Neck	GOOD	GOOD
Head Injury Criterion	18	189
Neck Compression	22 lbs.	201 lbs.
Torso	GOOD	GOOD
Shoulder Deflection	.98 in	1.02 in
Torso Max Deflection	.71 in	1.22 in
Torso Deflection Rate	7 MPH	10 MPH
Pelvis	GOOD	GOOD
Pelvis Force	625 lbs.	848 lbs.
Head Protection	GOOD	GOOD

Instrumented handling tests conducted by the National Highway Traffic Safety Administration and analysis of its dimensions indicate that the Sienna is 1% to 4.2% less likely to roll over than the Enclave.

The Toyota Sienna achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2024 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The Enclave is not a “Top Safety Pick” for 2024.

Warranty

The Sienna’s corrosion warranty is unlimited miles longer than the Enclave’s (unlimited vs. 100,000 miles).

Toyota pays for scheduled maintenance on the Sienna for 2 years and 25000 miles. Toyota will pay for oil changes, tire rotations, air filter replacements, cabin filter replacement, brake fluid replacement, inspections, and any other required maintenance. Buick doesn’t pay scheduled maintenance for the Enclave.

There are over 16 percent more Toyota dealers than there are Buick dealers, which makes it easier should you ever need service under the Sienna’s warranty.

Reliability

The battery on the Sienna is in the trunk, which protects it from hot underhood temperatures that can degrade battery life. By keeping the Sienna’s battery 20 to 30 degrees cooler, its life is increased by years. The Enclave’s battery is in the hot engine compartment.

J.D. Power and Associates’ 2024 survey of the owners of three-year-old vehicles provides the statistics that show that Toyota vehicles are more reliable than Buick vehicles. J.D. Power ranks Toyota second in reliability, above the industry average. With 2 more problems per 100 vehicles, Buick is ranked third.

From surveys of all its subscribers, Consumer Reports’ January 2024 Auto Issue reports that Toyota vehicles are more reliable than Buick vehicles. Consumer Reports ranks Toyota second in overall reliability. Buick is ranked 12th.

Fuel Economy and Range

On the EPA test cycle the Sienna gets better mileage than the Enclave:

			MPG
Sienna
	FWD	2.5 4-cyl. Hybrid	36 city/36 hwy
	AWD	2.5 4-cyl. Hybrid	34 city/36 hwy
Enclave
	FWD	3.6 DOHC V6	18 city/26 hwy
	AWD	3.6 DOHC V6	17 city/25 hwy

Regenerative brakes improve the Sienna’s fuel efficiency by converting inertia back into energy instead of wasting it. The Enclave doesn’t offer a regenerative braking system.

The Sienna has a standard locking fuel door with a power remote release convenient to the driver. The fuel filler door is not lockable on the Enclave. A locking fuel door helps prevent fuel theft and vandalism, such as sugar in the tank.

Transmission

The Sienna has a standard continuously variable transmission (CVT). With no “steps” between gears, it can keep the engine at the most efficient speed for fuel economy, or keep it at its peak horsepower indefinitely for maximum acceleration. The Enclave doesn’t offer a CVT.

Brakes and Stopping

For better stopping power the Sienna’s brake rotors are larger than those on the Enclave:

	Sienna	Enclave
Front Rotors	12.9 inches	12.6 inches
Rear Rotors	12.5 inches	12.4 inches

The Sienna stops shorter than the Enclave:

	Sienna	Enclave
60 to 0 MPH	125 feet	134 feet	Motor Trend

Tires and Wheels

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

Suspension and Handling

For better handling and stability, the track (width between the wheels) on the Sienna is .4 inches wider in the front and 1.5 inches wider in the rear than on the Enclave.

The Sienna’s front to rear weight distribution is more even (53% to 47%) than the Enclave’s (57% to 43%). This gives the Sienna more stable handling and braking.

For better maneuverability, the Sienna’s turning circle is .7 feet tighter than the Enclave’s (38.3 feet vs. 39 feet).

Passenger Space

The Sienna offers optional seating for 8 passengers; the Enclave can only carry 7.

The Sienna has 5.2 cubic feet more passenger volume than the Enclave (162.5 vs. 157.3).

The Sienna has .6 inches more front hip room, .2 inches more front shoulder room, 1.6 inches more rear legroom, 8.5 inches more rear hip room, 1.1 inches more rear shoulder room, 5.2 inches more third row legroom, .3 inches more third row hip room and 1.2 inches more third row shoulder room than the Enclave.

For enhanced passenger comfort on long trips the Sienna’s middle and third row seats recline. The Enclave’s third row seats don’t recline.

Cargo Capacity

The Sienna’s cargo area provides more volume than the Enclave.

	Sienna	Enclave
Behind Third Seat	33.5 cubic feet	23.6 cubic feet
Third Seat Folded	75.2 cubic feet	57.7 cubic feet
Second Seat Folded	101 cubic feet	97.4 cubic feet

The Sienna has a standard Split & Stow third row seat, which folds flat into the floor. This completely clears a very large cargo area quickly. The Enclave doesn’t offer seats that fold into the floor.

A standard locking glovebox (which can’t be accessed with the valet key) keeps your small valuables safer in the Sienna. The Enclave doesn’t offer locking storage for small valuables.

Towing

The Sienna’s standard towing capacity is much higher than the Enclave’s (3500 vs. 1500 pounds).

Standard Trailer Sway Control on the Sienna uses the Enhanced Vehicle Stability Control sensors to detect trailer sway, then uses individual brakes to counteract any swaying and help keep the tow vehicle and trailer steady. The Enclave doesn’t offer electronic trailer sway control.

Ergonomics

The Sienna’s front and rear power windows all open or close with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The Enclave’s passenger windows don’t close automatically.

Manual rear side window sunshades are available in the Sienna to help block heat and glare for the rear passengers. The Enclave doesn’t offer rear side window sunshades.

Economic Advantages

The Sienna will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the Sienna will retain 52.72% to 55.04% of its original price after five years, while the Enclave only retains 48.75% to 49.82%.

Recommendations

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

The Toyota Sienna outsold the Buick Enclave by 69% during 2023.