Buick Rainier compared with the Acura MDX
Safety
The Buick Rainier has Daytime Running Lights to help keep it more visible under all conditions. Daytime Running Lights
decrease the chances of collisions. Canadian government studies show that driving with lights during the day reduces accidents
by 11% by making vehicles more conspicuous. The MDX doesn’t offer Daytime Running Lights.
Both the Rainier and the MDX have standard driver and passenger frontal airbags, front seatbelt pretensioners, plastic fuel
tanks, four wheel antilock brakes, available head airbags and all wheel drive.
Warranty
The Rainier’s corrosion warranty is 1 year longer than the MDX’s (6 vs. 5 years).
There are almost 11 times as many Buick dealers as there are Acura dealers, which makes it much easier to get service under
the Rainier’s warranty.
Reliability
The camshafts in the Rainier’s engine are driven by a hardened steel chain, with no maintenance needs. The MDX’s camshafts
are driven by a rubber belt, which eventually needs to be replaced. If the MDX’s cam drive belt breaks the engine could be
severely damaged when the pistons hit the opened valves.
The Rainier V8 has a standard “limp home system” to keep drivers from being stranded if most or all of the engine’s coolant
is lost. The engine will run on only half of its cylinders at a time, reduce its power and light a warning lamp on the dashboard
so the driver can get to a service station for repairs. The MDX doesn’t offer a lost coolant limp home mode, so a coolant leak
could strand you or seriously damage the truck’s engine.
To reliably power the ignition and other systems and to recharge the battery, the Rainier has a standard 150 amp alternator.
The MDX’s 130 amp alternator isn’t as powerful.
J.D. Power and Associates’ 2004 Initial Quality Study of new car owners surveyed provide the statistics that show that Buick
vehicles are better in initial quality than Acura vehicles. J.D. Power ranks Buick fifth in initial quality, above the industry
average. With 17 more problems per 100 vehicles, Acura is ranked 15th.
J.D. Power and Associates’ surveys of the owners of three-year-old cars provide the long-term dependability statistics, which
show that Buick vehicles are more reliable than Acura vehicles. J.D. Power ranks Buick second in reliability. With 25 more
problems per 100 vehicles, Acura is ranked 7th.
Engine
The Rainier’s standard 4.2 DOHC 6 cyl. produces 10 more horsepower (275 vs. 265) and 22 lbs.-ft. more torque (275 vs.
253) than the MDX’s 3.5 SOHC V6. The Rainier’s optional 5.3 V8 produces 35 more horsepower (300 vs. 265) and 77 lbs.-
ft. more torque (330 vs. 253) than the MDX’s 3.5 SOHC V6.
As tested in Car and Driver the Buick Rainier V8 is faster than the Acura MDX:
Rainier MDX
Zero to 60 MPH 7.6 sec 7.8 sec
5 to 60 MPH Rolling Start 7.8 sec 8.2 sec
Quarter Mile 15.9 sec 16.1 sec
Speed in 1/4 Mile 86 MPH 85 MPH
Fuel Economy and Range
To lower fuel costs and make buying fuel easier, the Buick Rainier uses regular unleaded gasoline. The MDX requires
premium for maximum efficiency, which can cost 25 to 50 cents more per gallon.
The Rainier has 2.8 gallons more fuel capacity than the MDX (22 vs. 19.2 gallons), for longer range between fill-ups.
Page 2
Brakes and Stopping
For better stopping power the Rainier’s brake rotors are larger than those on the MDX:
Rainier MDX
Front Rotors 12 inches 11.8 inches
Rear Rotors 12.8 inches 12.3 inches
The Rainier’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear
discs on the MDX are solid, not vented.
The Rainier stops much shorter than the MDX:
Rainier MDX
70 to 0 MPH 191 feet 205 feet Car and Driver
Tires and Wheels
For better traction, the Rainier has larger tires than the MDX (245/65R17 vs. 235/65R17).
The Buick Rainier’s wheels have 6 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The
Acura MDX only has 5 wheel lugs per wheel.
The Rainier has a standard full size spare tire so your trip isn’t interrupted by a flat. A full size spare isn’t available on the
MDX, it requires you to depend on a temporary spare, which limits mileage and speed before replacement.
Suspension and Handling
The rear suspension of the Rainier uses air springs for a smoother, controlled ride than the MDX, which uses coil springs.
Air springs maintain proper ride height and ride more smoothly.
The Rainier has a standard automatic rear load leveling suspension to keep ride height level with a heavy load or when
towing. The MDX doesn’t offer a load leveling suspension.
For a smoother ride and more stable handling, the Rainier’s wheelbase is 6.7 inches longer than on the MDX (113 vs. 106.3
inches).
Passenger Space
The Rainier has 1.8 inches more front headroom, 3.1 inches more front legroom, .6 inches more rear headroom and 1.8 inches
more rear hip room than the MDX.
The front step up height for the Rainier is 1.6 inches lower than the MDX (18.2” vs. 19.8”).
Cargo Capacity
The Rainier has a much larger cargo area than the MDX with its rear seat up (39.8 vs. 14.8 cubic feet).
Towing
The Rainier’s minimum standard towing capacity is much higher than the MDX’s (5600 vs. 4500 pounds). Maximum trailer
towing in the Acura MDX is only 4500 pounds. The Rainier offers up to a 6700 lbs. towing capacity.
Servicing Ease
The engine in the Rainier is mounted longitudinally (North-South), instead of sideways, as in the MDX. This makes it easier
to service and maintain, because there are no rear spark plugs and the accessory belts are in front.
The Rainier has a standard under hood light to help in making nighttime maintenance checks, adding fluids, etc. The MDX
doesn’t offer an under hood light.
Page 3
Ergonomics
To help each driver find a more comfortable driving position, the Rainier offers a power adjustable foot pedal set. Much better
than just a tilt steering wheel or adjustable seat, this allows a short driver to sit further from the steering wheel while
maintaining pedal contact. The MDX doesn’t offer adjustable foot pedals.
The Rainier’s standard easy entry system glides the driver’s seat back, making it easier for the driver to get in and out. The
MDX doesn’t offer an easy entry system.
The Rainier’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 MDX does not have an oil pressure gauge.
The power windows standard on both the Rainier and the MDX have locks to prevent small children from operating them.
When the lock on the Rainier is engaged the driver can still operate all of the windows, for instance to close one opened by a
child. The MDX prevents the driver from operating the other windows just as it does the other passengers.
The Rainier’s front power windows lower automatically with one touch, especially convenient at tollbooths or drive-up
windows. Only the driver’s window of the MDX works automatically with one touch.
The MDX’s standard power locks don’t automatically lock the doors. The Rainier’s standard doors lock when a certain speed is
reached. This is an important feature for occupant safety. Locked doors are proven to open less often in collisions, and they
are also effective in preventing crime at traffic lights. (The power lock’s automatic feature may have to be activated by your
dealer.)
To help drivers avoid possible obstacles, the Rainier has standard cornering lights to illuminate around corners. The MDX
doesn’t offer cornering lights.
The Rainier’s standard dual zone air conditioning allows the driver and front passenger to choose two completely different
temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front
passenger as comfortable as possible. The MDX doesn’t offer dual zone air conditioning.
The Rainier’s standard turn signal stalk mounted cruise control on/off switch is conveniently located with the rest of the
cruise controls. The MDX’s cruise control must be turned on with a hard to find switch on the dashboard.
Model Availability
The Rainier is available in both rear wheel drive and four wheel drive configurations. The MDX doesn't offer a two wheel
drive configuration.
Economic Advantages
Insurance will cost less for the Rainier owner. The Car Book rates the Rainier with a number 5 insurance rate while the MDX
is rated higher at a number 10 rate.
source: http://www.advantastar.com/samples/Buick.pdf
Safety
The Buick Rainier has Daytime Running Lights to help keep it more visible under all conditions. Daytime Running Lights
decrease the chances of collisions. Canadian government studies show that driving with lights during the day reduces accidents
by 11% by making vehicles more conspicuous. The MDX doesn’t offer Daytime Running Lights.
Both the Rainier and the MDX have standard driver and passenger frontal airbags, front seatbelt pretensioners, plastic fuel
tanks, four wheel antilock brakes, available head airbags and all wheel drive.
Warranty
The Rainier’s corrosion warranty is 1 year longer than the MDX’s (6 vs. 5 years).
There are almost 11 times as many Buick dealers as there are Acura dealers, which makes it much easier to get service under
the Rainier’s warranty.
Reliability
The camshafts in the Rainier’s engine are driven by a hardened steel chain, with no maintenance needs. The MDX’s camshafts
are driven by a rubber belt, which eventually needs to be replaced. If the MDX’s cam drive belt breaks the engine could be
severely damaged when the pistons hit the opened valves.
The Rainier V8 has a standard “limp home system” to keep drivers from being stranded if most or all of the engine’s coolant
is lost. The engine will run on only half of its cylinders at a time, reduce its power and light a warning lamp on the dashboard
so the driver can get to a service station for repairs. The MDX doesn’t offer a lost coolant limp home mode, so a coolant leak
could strand you or seriously damage the truck’s engine.
To reliably power the ignition and other systems and to recharge the battery, the Rainier has a standard 150 amp alternator.
The MDX’s 130 amp alternator isn’t as powerful.
J.D. Power and Associates’ 2004 Initial Quality Study of new car owners surveyed provide the statistics that show that Buick
vehicles are better in initial quality than Acura vehicles. J.D. Power ranks Buick fifth in initial quality, above the industry
average. With 17 more problems per 100 vehicles, Acura is ranked 15th.
J.D. Power and Associates’ surveys of the owners of three-year-old cars provide the long-term dependability statistics, which
show that Buick vehicles are more reliable than Acura vehicles. J.D. Power ranks Buick second in reliability. With 25 more
problems per 100 vehicles, Acura is ranked 7th.
Engine
The Rainier’s standard 4.2 DOHC 6 cyl. produces 10 more horsepower (275 vs. 265) and 22 lbs.-ft. more torque (275 vs.
253) than the MDX’s 3.5 SOHC V6. The Rainier’s optional 5.3 V8 produces 35 more horsepower (300 vs. 265) and 77 lbs.-
ft. more torque (330 vs. 253) than the MDX’s 3.5 SOHC V6.
As tested in Car and Driver the Buick Rainier V8 is faster than the Acura MDX:
Rainier MDX
Zero to 60 MPH 7.6 sec 7.8 sec
5 to 60 MPH Rolling Start 7.8 sec 8.2 sec
Quarter Mile 15.9 sec 16.1 sec
Speed in 1/4 Mile 86 MPH 85 MPH
Fuel Economy and Range
To lower fuel costs and make buying fuel easier, the Buick Rainier uses regular unleaded gasoline. The MDX requires
premium for maximum efficiency, which can cost 25 to 50 cents more per gallon.
The Rainier has 2.8 gallons more fuel capacity than the MDX (22 vs. 19.2 gallons), for longer range between fill-ups.
Page 2
Brakes and Stopping
For better stopping power the Rainier’s brake rotors are larger than those on the MDX:
Rainier MDX
Front Rotors 12 inches 11.8 inches
Rear Rotors 12.8 inches 12.3 inches
The Rainier’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear
discs on the MDX are solid, not vented.
The Rainier stops much shorter than the MDX:
Rainier MDX
70 to 0 MPH 191 feet 205 feet Car and Driver
Tires and Wheels
For better traction, the Rainier has larger tires than the MDX (245/65R17 vs. 235/65R17).
The Buick Rainier’s wheels have 6 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The
Acura MDX only has 5 wheel lugs per wheel.
The Rainier has a standard full size spare tire so your trip isn’t interrupted by a flat. A full size spare isn’t available on the
MDX, it requires you to depend on a temporary spare, which limits mileage and speed before replacement.
Suspension and Handling
The rear suspension of the Rainier uses air springs for a smoother, controlled ride than the MDX, which uses coil springs.
Air springs maintain proper ride height and ride more smoothly.
The Rainier has a standard automatic rear load leveling suspension to keep ride height level with a heavy load or when
towing. The MDX doesn’t offer a load leveling suspension.
For a smoother ride and more stable handling, the Rainier’s wheelbase is 6.7 inches longer than on the MDX (113 vs. 106.3
inches).
Passenger Space
The Rainier has 1.8 inches more front headroom, 3.1 inches more front legroom, .6 inches more rear headroom and 1.8 inches
more rear hip room than the MDX.
The front step up height for the Rainier is 1.6 inches lower than the MDX (18.2” vs. 19.8”).
Cargo Capacity
The Rainier has a much larger cargo area than the MDX with its rear seat up (39.8 vs. 14.8 cubic feet).
Towing
The Rainier’s minimum standard towing capacity is much higher than the MDX’s (5600 vs. 4500 pounds). Maximum trailer
towing in the Acura MDX is only 4500 pounds. The Rainier offers up to a 6700 lbs. towing capacity.
Servicing Ease
The engine in the Rainier is mounted longitudinally (North-South), instead of sideways, as in the MDX. This makes it easier
to service and maintain, because there are no rear spark plugs and the accessory belts are in front.
The Rainier has a standard under hood light to help in making nighttime maintenance checks, adding fluids, etc. The MDX
doesn’t offer an under hood light.
Page 3
Ergonomics
To help each driver find a more comfortable driving position, the Rainier offers a power adjustable foot pedal set. Much better
than just a tilt steering wheel or adjustable seat, this allows a short driver to sit further from the steering wheel while
maintaining pedal contact. The MDX doesn’t offer adjustable foot pedals.
The Rainier’s standard easy entry system glides the driver’s seat back, making it easier for the driver to get in and out. The
MDX doesn’t offer an easy entry system.
The Rainier’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 MDX does not have an oil pressure gauge.
The power windows standard on both the Rainier and the MDX have locks to prevent small children from operating them.
When the lock on the Rainier is engaged the driver can still operate all of the windows, for instance to close one opened by a
child. The MDX prevents the driver from operating the other windows just as it does the other passengers.
The Rainier’s front power windows lower automatically with one touch, especially convenient at tollbooths or drive-up
windows. Only the driver’s window of the MDX works automatically with one touch.
The MDX’s standard power locks don’t automatically lock the doors. The Rainier’s standard doors lock when a certain speed is
reached. This is an important feature for occupant safety. Locked doors are proven to open less often in collisions, and they
are also effective in preventing crime at traffic lights. (The power lock’s automatic feature may have to be activated by your
dealer.)
To help drivers avoid possible obstacles, the Rainier has standard cornering lights to illuminate around corners. The MDX
doesn’t offer cornering lights.
The Rainier’s standard dual zone air conditioning allows the driver and front passenger to choose two completely different
temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front
passenger as comfortable as possible. The MDX doesn’t offer dual zone air conditioning.
The Rainier’s standard turn signal stalk mounted cruise control on/off switch is conveniently located with the rest of the
cruise controls. The MDX’s cruise control must be turned on with a hard to find switch on the dashboard.
Model Availability
The Rainier is available in both rear wheel drive and four wheel drive configurations. The MDX doesn't offer a two wheel
drive configuration.
Economic Advantages
Insurance will cost less for the Rainier owner. The Car Book rates the Rainier with a number 5 insurance rate while the MDX
is rated higher at a number 10 rate.
source: http://www.advantastar.com/samples/Buick.pdf
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