Compare the2024 Toyota SiennaVS 2024 Mazda CX-90

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 Mazda CX-90 doesn’t offer height-adjustable middle seat belts.

To help make backing out of a parking space safer, the Sienna has standard Rear Cross Traffic Alert with Rear Cross Traffic Braking, systems which detect vehicles approaching from the sides and can automatically apply the brakes to prevent a collision. Only the CX-90 Premium Plus/Turbo S Premium offers Rear Cross Traffic Braking.

Both the Sienna and the CX-90 have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, 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, driver alert monitors, available all wheel drive and around view monitors.

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. Mazda doesn’t pay scheduled maintenance for the CX-90.

There are over 2 times as many Toyota dealers as there are Mazda dealers, which makes it much easier should you ever need service under the Sienna’s warranty.

J.D. Power and Associates’ 2023 Initial Quality Study of new car owners surveyed provide the statistics that show that Toyota vehicles are better in initial quality than Mazda vehicles. With 9 fewer problems per 100 vehicles, JD Power ranks Toyota higher than Mazda.

J.D. Power and Associates’ 2022 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Toyota vehicles are more reliable than Mazda vehicles. J.D. Power ranks Toyota above average in long-term dependability. With 34 more problems per 100 vehicles in the first three years of ownership, Mazda is rated lower.

From surveys of all its subscribers, Consumer Reports’ January 2024 Auto Issue reports that Toyota vehicles are more reliable than Mazda vehicles. Consumer Reports ranks Toyota second in overall reliability. Mazda is ranked 7th.

On the EPA test cycle the Sienna gets better mileage than the CX-90 running its gasoline engine:

To lower fuel costs and make buying fuel easier, the Toyota Sienna uses regular unleaded gasoline. The CX-90 PHEV requires premium for maximum efficiency, which can cost on average about 82.8 cents more per gallon.

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Toyota Sienna higher (7 out of 10) than the Mazda CX-90 (6). This means the Sienna produces up to 1.1 pounds less smog-producing pollutants than the CX-90 every 15,000 miles.

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 CX-90 doesn’t offer a CVT.

For better handling and stability, the track (width between the wheels) on the Sienna is .6 inches wider in the front and 1.3 inches wider in the rear than on the CX-90.

The Sienna has 20.9 cubic feet more passenger volume than the CX-90 (162.5 vs. 141.6).

The Sienna has .4 inches more front headroom, 3.2 inches more front shoulder room, .6 inches more rear headroom, .5 inches more rear legroom, 4.6 inches more rear shoulder room, .5 inches more third row headroom, 8.3 inches more third row legroom and 5.2 inches more third row shoulder room than the CX-90.

For enhanced passenger comfort on long trips the Sienna’s middle and third row seats recline. The CX-90’s third row seats don’t recline.

The Sienna’s cargo area provides more volume than the CX-90.

A standard locking glovebox (which can’t be accessed with the valet key) keeps your small valuables safer in the Sienna. The CX-90 doesn’t offer locking storage for small valuables.

The Sienna XSE Premium/Limited/Platinum’s standard easy entry system raises the steering wheel and glides the driver’s seat back when the door is unlocked or the ignition is switched off, making it easier for the driver to get in and out. The CX-90 doesn’t offer an easy entry system.

The power windows standard on both the Sienna and the CX-90 have locks to prevent small children from operating them. When the lock on the Sienna is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The CX-90 prevents the driver from operating the other windows just as it does the other passengers.

If the windows are left open on the Sienna the driver can close them all at the outside door handle. On a hot day the driver can lower the windows at the outside door handle or from a distance using the keyless remote. (This window function must be activated by your Toyota service department.) The driver of the CX-90 can only close the windows from inside the vehicle, with the ignition on.

The Sienna’s standard sliding doors can be opened with less than three inches side clearance. The CX-90’s standard rear swing-out doors are bulky and make loading in tight spots difficult.

The Sienna’s power side sliding doors make it much easier to load and unload kids and cargo. One touch opens the door, before you even get to the van. The CX-90 doesn’t offer a power rear door.

The Sienna’s power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The CX-90’s power window (except driver window) switches are unlit, making them difficult to find at night and operate safely.

The Sienna is available in both front-wheel drive and all-wheel drive configurations. The CX-90 doesn’t offer a two-wheel drive configuration.

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

The Toyota Sienna outsold the Mazda CX-90 by over two to one during 2023.