Certified Benz & Beemer Compares 2012 Acura RDX VS 2012 Cadillac SRX Near Phoenix, AZ

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2012 Acura RDX

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2012 Cadillac SRX

Safety Comparison

Using vehicle speed sensors and seat sensors, smart airbags in the RDX deploy with different levels of force or don’t deploy at all to help better protect passengers of all sizes in different collisions. The RDX’s side airbags will shut off if a child is leaning against the door. The SRX’s side airbags don’t have smart features and will always deploy full force.

Both the RDX and the SRX have standard driver and passenger frontal airbags, front side-impact airbags, 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 and available all wheel drive.

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





5 Stars

5 Stars

Head Injury Index



Chest forces

40 g’s

41 g’s



5 Stars

4 Stars

Head Injury Index



More stars indicate a better overall result. Lower numbers indicate better individual test results.

Warranty Comparison

Acura’s powertrain warranty covers the RDX 1 year longer than Cadillac covers the SRX. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the SRX ends after only 5 years.

Reliability Comparison

A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without their vehicle while it’s being repaired. Consumer Reports predicts that the RDX’s reliability will be 49% better than the Cadillac SRX 2WD and 50% better than the Cadillac SRX 4.

J.D. Power and Associates rated the RDX second among entry premium crossover/SUV’s in their 2011 Initial Quality Study. The SRX isn’t in the top three in its category.

J.D. Power and Associates’ 2011 Initial Quality Study of new car owners surveyed provide the statistics that show that Acura vehicles are better in initial quality than Cadillac vehicles. J.D. Power ranks Acura third in initial quality, above the industry average. With 14 more problems per 100 vehicles, Cadillac is ranked 9th.

J.D. Power and Associates’ 2011 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Acura vehicles are more reliable than Cadillac vehicles. J.D. Power ranks Acura 6th in reliability, above the industry average. With 7 more problems per 100 vehicles, Cadillac is ranked 9th.

Fuel Economy and Range Comparison

On the EPA test cycle the RDX FWD gets better fuel mileage than the SRX FWD (19 city/24 hwy vs. 17 city/24 hwy).

Brakes and Stopping Comparison

The RDX’s brakes have 73% more swept area (the area covered by the brake pads) than the SRX (454 vs. 262.8 square inches), so the RDX has more braking power available.

The RDX stops shorter than the SRX:



70 to 0 MPH

178 feet

180 feet

Car and Driver

Tires and Wheels Comparison

The RDX’s tires provide better handling because they have a lower 55 series profile (height to width ratio) that provides a stiffer sidewall than the SRX’s standard 65 series tires.

The RDX has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the SRX, it requires you to depend on roadside assistance and your vehicle will have to be towed.

Suspension and Handling Comparison

The RDX has standard front and rear gas-charged shocks for better control over choppy roads. The SRX’s suspension doesn’t offer gas-charged shocks.

The RDX SH-AWD™ handles at .84 G’s, while the SRX 4 pulls only .80 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the RDX’s turning circle is 1.1 feet tighter than the SRX’s (39.2 feet vs. 40.3 feet).

Chassis Comparison

The Acura RDX may be more efficient, handle and accelerate better because it weighs about 500 to 550 pounds less than the Cadillac SRX.

The RDX is 7.8 inches shorter than the SRX, making the RDX easier to handle, maneuver and park in tight spaces.

Passenger Space Comparison

The RDX has .6 inches more front legroom and 1.4 inches more rear legroom than the SRX.

Cargo Capacity Comparison

A low lift-over cargo hatch design makes loading and unloading the RDX easier. The RDX’s cargo hatch lift-over height is 29 inches, while the SRX’s liftover is 30.1 inches.

Ergonomics Comparison

The RDX has a standard locking fuel door with a remote release located convenient to the driver. A locking fuel door helps prevent vandalism, such as sugar in the tank and fuel theft. The SRX doesn’t offer a locking fuel door.

The RDX’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 SRX’s standard manually variable intermittent wipers have to be constantly adjusted.

The RDX’s available GPS navigation system has a real-time traffic update feature that offers alternative routes to automatically bypass traffic problems. (Service available in a limited number of metro areas.) The SRX’s available navigation system doesn’t offer real-time traffic updates.

Economic Advantages Comparison

Insurance will cost less for the RDX owner. The Complete Car Cost Guide estimates that insurance for the RDX will cost $1585 to $2715 less than the SRX over a five-year period.

The RDX will cost the buyer less in the long run because of its superior resale value. Kiplinger’s estimates that the RDX will retain a greater percentage of its original price after two and four years than the SRX.



Four Year



Two Year



According to The Car Book by Jack Gillis, the RDX is less expensive to operate than the SRX because it costs $742 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the RDX than the SRX, including $99 less for a water pump, $1413 less for an alternator, $59 less for front brake pads, $126 less for fuel injection, $427 less for a fuel pump, $662 less for front struts and $219 less for a timing belt/chain.

Intellichoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Acura RDX will be $4230 to $7080 less than for the Cadillac SRX.

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