SONS Automotive Group Compares 2007 Mercury Mariner VS 2007 Buick Rendezvous Near Braselton, GA

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2007 Mercury Mariner

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2007 Mercury Mariner

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2007 Buick Rendezvous

Safety Comparison

To maximize occupant safety, the front seat shoulder belts of the Mercury Mariner have pretensioners to eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Buick Rendezvous doesn’t offer pretensioners.

Both the Mariner and the Rendezvous have standard driver and passenger frontal airbags, front wheel drive, height adjustable front shoulder belts, four wheel antilock brakes, available front seat side-impact airbags, head airbags and all wheel drive.

The Rendezvous’ 64 driver’s chest forces index is 6.67% higher than the threshold that indicates possible serious injuries or death.

The Insurance Institute for Highway Safety rates the general design of front seat head restraints for their ability to protect front seat occupants from whiplash injuries. The IIHS also performs a dynamic test on those seats with “good” or “acceptable” geometry. In these ratings, the Mariner is safer then the Rendezvous:



Overall Evaluation



Head Restraint Design



Distance from Back of Head

28 mm

85 mm

Distance Below Top of Head

42 mm

75 mm

Dynamic Test Rating



Seat Design



Torso Acceleration

8.4 g’s

13.6 g’s

Neck Force Rating



Max Neck Shearing Force



Max Neck Tension



(Lower numerical results are better in all tests.)

Reliability Comparison

For smoother operation, better efficiency and fewer moving parts, the engines in the Mariner have an overhead cam design, rather than the old pushrod design of the engine in the Rendezvous.

The Mariner’s reliability is better than the Rendezvous’. In Consumer Reports, the Mariner’s reliability is 38% better.

J.D. Power and Associates’ 2005 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercury vehicles are better in initial quality than Buick vehicles. J.D. Power ranks Mercury 16th in initial quality. With 5 more problems per 100 vehicles, Buick is ranked 22nd.

J.D. Power and Associates’ surveys of the owners of three-year-old cars provide the long-term dependability statistics which show that Mercury vehicles are more reliable than Buick vehicles. J.D. Power ranks Mercury second in reliability. With 2 more problems per 100 vehicles, Buick is ranked third.

Engine Comparison

The Mariner Hybrid’s standard 2.3 DOHC 4 cyl. hybrid produces 24 lbs.-ft. more torque (239 vs. 215) than the Rendezvous’ 3.5 V6. The Mariner’s optional 3.0 DOHC V6 produces 4 more horsepower (200 vs. 196) than the Rendezvous’ 3.5 V6.

Fuel Economy and Range Comparison

On the EPA test cycle the Mariner Hybrid AWD gets higher fuel mileage than the Rendezvous AWD (32 city/29 hwy vs. 18 city/23 hwy).

On the EPA test cycle the Mariner V6 AWD gets better fuel mileage than the Rendezvous 4WD (19 city/23 hwy vs. 18 city/23 hwy).

Brakes and Stopping Comparison

For better stopping power the Mariner V6/Hybrid’s front brake rotors are larger than those on the Rendezvous:


Mariner V6/Hybrid


Front Rotors

10.9 inches

11.9 inches

10.8 inches

Rear Rotors

9 inches

11.9 inches

11.5 inches

In an emergency stopping situation, many drivers don’t press the brakes with enough force to stop the vehicle in the shortest distance. The Mariner has a standard Quick Brake Assist to detect emergency braking situations (by how hard and how quickly the brake pedal is pressed) and then automatically apply maximum braking immediately in order to help prevent a collision. The Rendezvous doesn’t offer a brake assist feature.

Tires and Wheels Comparison

For better traction, the Mariner has larger tires than the Rendezvous (235/70R16 vs. 225/60R17).

Suspension and Handling Comparison

The Mariner has engine speed sensitive variable-assist power steering, for low-effort parking, better control at highway speeds and during hard cornering, and a better feel of the road. The Rendezvous doesn’t offer variable-assist power steering.

Chassis Comparison

The Mercury Mariner may be more efficient, handle and accelerate better because it weighs about 300 to 850 pounds less than the Buick Rendezvous.

The Mariner is 1 foot shorter than the Rendezvous, making the Mariner easier to handle, maneuver and park in tight spaces.

Ergonomics Comparison

To improve rear visibility by keeping the rear window clear, the Mariner has a standard rear fixed intermittent wiper with a full on position. The rear wiper standard on the Rendezvous only has an intermittent setting, so in a hard rain visibility isn’t as good.

The Mariner’s standard steering wheel mounted cruise control is close at hand. The Rendezvous’ cruise control is on an over-crowded turn signal stalk.

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