Compare the2025 Toyota Crown SigniaVS 2024 Acura RDX

For enhanced safety, the front and rear seat shoulder belts of the Toyota Crown Signia have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Acura RDX doesn’t offer pretensioners for its rear seat belts.

In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the Crown Signia are reminded to check the back seat if they opened the rear door before starting out. The RDX doesn’t offer a back seat reminder.

The Crown Signia has standard Whiplash Injury Lessening Seats, which use a specially designed seat to protect the driver and front passenger from whiplash. During a rear-end collision, the Whiplash Injury Lessening Seats system allows the backrest to travel backwards to cushion the occupants and the headrests move forward to prevent neck and spine injuries. The RDX doesn’t offer a whiplash protection system.

The Crown Signia 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 RDX 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.

Over 200 people are killed each year when backed over by motor vehicles. The Crown Signia Limited offers an optional Parking Support Brake that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The RDX doesn’t offer backup collision prevention brakes.

Both the Crown Signia and RDX have rear cross-traffic warning, but the Crown Signia Limited offers optional Parking Support Brake (automatically applies the brakes) to better prevent a collision when backing near traffic. The RDX’s Rear Cross Traffic Monitor doesn’t automatically brake.

The Crown Signia’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 RDX doesn’t offer a driver alert monitor.

Both the Crown Signia and the RDX have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, all wheel drive, 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 and available around view monitors.

There are almost 5 times as many Toyota dealers as there are Acura dealers, which makes it much easier should you ever need service under the Crown Signia’s warranty.

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

J.D. Power and Associates’ 2024 Initial Quality Study of new car owners surveyed provide the statistics that show that Toyota vehicles are better in initial quality than Acura vehicles. J.D. Power ranks Toyota above average in initial quality. With 1 more problems per 100 vehicles, Acura is rated lower.

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 Acura vehicles. J.D. Power ranks Toyota second in reliability, above the industry average. With 69 more problems per 100 vehicles, Acura is ranked 20th.

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

On the EPA test cycle the Crown Signia gets better mileage than the RDX:

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

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

The Crown Signia 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 RDX doesn’t offer a CVT.

For better stopping power the Crown Signia’s brake rotors are larger than those on the RDX:

The Crown Signia’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the RDX are solid, not vented.

For better ride, handling and brake cooling the Crown Signia Limited has standard 21-inch wheels. The RDX’s largest wheels are only 20-inches.

For a smoother ride and more stable handling, the Crown Signia’s wheelbase is 3.9 inches longer than on the RDX (112.2 inches vs. 108.3 inches).

The Crown Signia has .5 inches more front legroom and .6 inches more rear headroom than the RDX.

The Crown Signia’s standard towing capacity is much higher than the RDX’s (2700 vs. 1500 pounds).

The Crown Signia’s standard Smart Key System 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. Smart Entry standard on the RDX doesn’t offer a sensor on the rear doors, so you’ll have to reach a front handle to unlock the rear door.

The Crown Signia 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 costs extra on the RDX.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Toyota Crown Signia has a standard wireless phone charging system (Qi) in the center console. Wireless charging costs extra on the RDX.