Certified Benz & Beemer Compares 2015 Maserati Ghibli VS 2016 Acura RLX Near Phoenix, AZ

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2015 Maserati Ghibli

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2016 Acura RLX

Safety Comparison

For enhanced safety, the front and rear seat shoulder belts of the Maserati Ghibli 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 RLX doesn’t offer pretensioners for the rear seat belts.

Both the Ghibli and the RLX have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, height-adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding and available all wheel drive.

Reliability Comparison

The camshafts in the Ghibli’s engine are driven by a hardened steel chain, with no maintenance needs. The RLX’s camshafts are driven by a rubber belt that needs periodic replacement. If the RLX’s cam drive belt breaks the engine could be severely damaged when the pistons hit the opened valves.

Engine Comparison

The Ghibli’s standard 3.0 turbo V6 produces 35 more horsepower (345 vs. 310) and 97 lbs.-ft. more torque (369 vs. 272) than the RLX’s standard 3.5 SOHC V6. The Ghibli S’ standard 3.0 turbo V6 produces 27 more horsepower (404 vs. 377) and 29 lbs.-ft. more torque (406 vs. 377) than the RLX Sport Hybrid’s standard 3.5 SOHC V6 hybrid.

As tested in Motor Trend the Ghibli S is faster than the Acura RLX FWD:



Zero to 60 MPH

4.8 sec

5.9 sec

Quarter Mile

13.4 sec

14.4 sec

Speed in 1/4 Mile

104.8 MPH

99 MPH

Fuel Economy and Range Comparison

The Ghibli has 6 gallons more fuel capacity than the RLX Sport Hybrid’s standard fuel tank (21.1 vs. 15.1 gallons), for longer range between fill-ups. The Ghibli has 2.6 gallons more fuel capacity than the RLX’s standard fuel tank (21.1 vs. 18.5 gallons).

Brakes and Stopping Comparison

For better stopping power the Ghibli’s brake rotors are larger than those on the RLX:


Ghibli S


RLX Sport Hybrid

Front Rotors

13.6 inches

14.2 inches

12.3 inches

13 inches

Rear Rotors

12.6 inches

13.8 inches

12.2 inches

12.2 inches

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

The Ghibli stops much shorter than the RLX:



60 to 0 MPH

115 feet

128 feet

Consumer Reports

60 to 0 MPH (Wet)

125 feet

138 feet

Consumer Reports

Tires and Wheels Comparison

The Ghibli’s optional 245/35R21 front and 285/30R21 rear tires provide better handling because they have a lower 35 series front and 30 series rear profile (height to width ratio) that provides a stiffer sidewall than the RLX’s 40 series tires.

For better ride, handling and brake cooling the Ghibli offers optional 21-inch wheels. The RLX’s largest wheels are only 19-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the Ghibli can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The RLX doesn’t offer run-flat tires.

The Ghibli 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 RLX, it requires you to depend on roadside assistance and your vehicle will have to be towed.

Suspension and Handling Comparison

The Ghibli offers an optional driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The RLX’s suspension doesn’t offer adjustable shock absorbers.

For a smoother ride and more stable handling, the Ghibli’s wheelbase is 5.8 inches longer than on the RLX (118 inches vs. 112.2 inches).

The Ghibli’s front to rear weight distribution is more even (50% to 50%) than the RLX’s (57% to 43%). This gives the Ghibli more stable handling and braking.

The Ghibli S Q4 handles at .91 G’s, while the RLX pulls only .80 G’s of cornering force in a Motor Trend skidpad test.

The Ghibli S Q4 executes Motor Trend’s “Figure Eight” maneuver 1.8 seconds quicker than the RLX (25.5 seconds @ .8 average G’s vs. 27.3 seconds @ .64 average G’s).

For better maneuverability, the Ghibli’s turning circle is 2.1 feet tighter than the RLX’s (38.4 feet vs. 40.5 feet).

Passenger Space Comparison

Because it has more passenger and cargo room, the Ghibli is rated a Large car by the EPA, while the RLX is rated a Mid-size.

The Ghibli has 5.9 cubic feet more passenger volume than the RLX (108 vs. 102.1).

The Ghibli has 1.2 inches more front headroom and 1.9 inches more rear headroom than the RLX.

Cargo Capacity Comparison

The Ghibli has a much larger trunk than the RLX (17.6 vs. 14.9 cubic feet).

The Ghibli’s standard rear seats fold to accommodate long and bulky cargo. The RLX doesn’t offer folding rear seats, only a ski pass-through.

Ergonomics Comparison

The Ghibli’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 RLX does not have an oil pressure gauge.

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

Heated windshield washer nozzles are standard on the Ghibli to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The RLX doesn’t offer heated windshield washer nozzles.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The Ghibli offers available headlight washers to keep headlight output high. The RLX doesn’t offer headlight washers.

While driving with high beams on, sensitive light sensors available for the Ghibli detect other vehicles which could be blinded and automatically switch to low beams. The RLX doesn’t offer automatic dimming high beams.

To help drivers see further while navigating curves, the Ghibli offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The RLX doesn’t offer cornering lights.

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