Certified Benz & Beemer Compares 2017 Cadillac XT5 VS 2017 Lexus RX Near Phoenix, AZ

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2017 Cadillac XT5

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2017 Lexus RX

Safety Comparison

The XT5 Premium/Platinum’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The RX Series doesn’t offer pre-crash pretensioners.

For enhanced safety, the front shoulder belts of the Cadillac XT5 are height-adjustable, and the rear seat shoulder belts have child comfort guides to move the belt to properly fit children. A better fit can prevent injuries and the increased comfort also encourages children to buckle up. The Lexus RX Series has only front height-adjustable seat belts.

Over 200 people are killed each year when backed over by motor vehicles. The XT5 offers optional Reverse Automatic Braking which use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The RX Series doesn’t offer backup collision prevention brakes.

Both the XT5 and the RX Series have standard driver and passenger frontal airbags, driver knee 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, daytime running lights, rearview cameras, available all-wheel drive, crash mitigating brakes, lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.

Warranty Comparison

Cadillac pays for scheduled maintenance on the XT5 for 4 years and 50,000 miles. Cadillac will pay for oil changes, lubrication and any other required maintenance. Lexus only pays for the first scheduled maintenance visit on the RX Series.

There are almost 4 times as many Cadillac dealers as there are Lexus dealers, which makes it much easier should you ever need service under the XT5’s warranty.

Engine Comparison

The XT5’s 3.6 DOHC V6 produces 15 more horsepower (310 vs. 295) and 3 lbs.-ft. more torque (271 vs. 268) than the RX 350’s standard 3.5 DOHC V6. The XT5’s 3.6 DOHC V6 produces 2 more horsepower (310 vs. 308) than the RX 450h’s standard 3.5 DOHC V6 hybrid.

As tested in Motor Trend the Cadillac XT5 is faster than the Lexus RX Series:



RX 350

RX 450h

Zero to 60 MPH

6.4 sec

6.8 sec

7 sec

Quarter Mile

15 sec

15.1 sec

15.3 sec

Fuel Economy and Range Comparison

An engine control system that can shut down half of the engine’s cylinders helps improve the XT5’s fuel efficiency. The RX Series doesn’t offer a system that can shut down part of the engine.

To lower fuel costs and make buying fuel easier, the Cadillac XT5 uses regular unleaded gasoline. The RX 450h requires premium, which can cost 20 to 55 cents more per gallon.

The XT5 FWD’s standard fuel tank has 2.2 gallons more fuel capacity than the RX Series Hybrid’s standard fuel tank (19.4 vs. 17.2 gallons), for longer range between fill-ups. The XT5 AWD’s standard fuel tank has 2.5 gallons more fuel capacity than the RX Series’ standard fuel tank (21.7 vs. 19.2 gallons).

The XT5 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 RX Series doesn’t offer a cap-less fueling system.

Brakes and Stopping Comparison

For better stopping power the XT5’s front brake rotors are larger than those on the RX Series:



RX Series

Front Rotors

13.6 inches

12.9 inches

The XT5 stops much shorter than the RX Series:



RX Series


60 to 0 MPH

111 feet

123 feet

Motor Trend

Tires and Wheels Comparison

The Cadillac XT5’s wheels have 6 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The Lexus RX Series only has 5 wheel lugs per wheel.

Suspension and Handling Comparison

For a smoother ride and more stable handling, the XT5’s wheelbase is 2.7 inches longer than on the RX Series (112.5 inches vs. 109.8 inches).

The XT5 4x4 handles at .82 G’s, while the RX 450h AWD pulls only .78 G’s of cornering force in a Motor Trend skidpad test.

The XT5 executes Motor Trend’s “Figure Eight” maneuver quicker than the RX 450h AWD (27 seconds @ .65 average G’s vs. 27.5 seconds @ .65 average G’s).

Chassis Comparison

The Cadillac XT5 may be more efficient, handle and accelerate better because it weighs about 250 to 400 pounds less than the Lexus RX Series.

The XT5 is 3 inches shorter than the RX Series, making the XT5 easier to handle, maneuver and park in tight spaces.

Passenger Space Comparison

The XT5 has .5 inches more front shoulder room and 1.5 inches more rear legroom than the RX Series.

Cargo Capacity Comparison

The XT5 has a much larger cargo area with its rear seat up than the RX Series with its rear seat up (30 vs. 18.4 cubic feet). The XT5 has a much larger cargo area with its rear seat folded than the RX Series with its rear seat folded (63 vs. 56.3 cubic feet).

Ergonomics Comparison

The XT5’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 RX Series does not have an oil pressure gauge.

The XT5’s optional Automatic Park Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The RX Series doesn’t offer an automated parking system.

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