Son's Automotive Group Compares 2006 BMW 6 SERIES VS 2006 Infiniti G35 Near Braselton, GA

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2006 Infiniti G35

Safety Comparison

The BMW 6 Series has Daytime Running Lights to help keep it more visible under all conditions. Canadian government studies show that driving with lights during the day reduces accidents by 11% by making vehicles more conspicuous. The G35 Coupe doesn’t offer Daytime Running Lights.

The 6 Series has a standard backup radar to help warn drivers about vehicles, pedestrians or other obstacles behind or in front of their vehicle. This collision warning system uses radar to detect obstacles behind the rear bumper. The G35 Coupe doesn’t offer a rear collision sensor.

The 6 Series has standard BMW Assist, which uses a global positioning satellite (GPS) receiver and a cellular system to get driving directions or send emergency personnel to the scene if any airbags deploy. The G35 Coupe doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies.

Both the 6 Series and the G35 Coupe have standard driver and passenger frontal airbags, front side-impact airbags, head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, plastic fuel tanks, four wheel antilock brakes, traction control and electronic stability systems to prevent skidding.

Warranty Comparison

The 6 Series’ corrosion warranty is 5 years longer than the G35 Coupe’s (12 vs. 7 years).

BMW pays for scheduled maintenance on the 6 Series for 4 years and 50,000 miles. BMW will pay for oil changes, tire rotation, lubrication and any other scheduled maintenance. Infiniti doesn’t pay scheduled maintenance for the G35 Coupe.

There are over 2 times as many BMW dealers as there are Infiniti dealers, which makes it much easier to get service under the 6 Series’ warranty.

Reliability Comparison

The battery on the 6 Series is in the trunk, which protects it from hot underhood temperatures which can degrade battery life. By keeping the 6 Series’ battery 20 to 30 degrees cooler, its life is increased by years. The G35 Coupe’s battery is in the hot engine compartment.

J.D. Power and Associates’ 2005 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Infiniti vehicles. J.D. Power ranks BMW third in initial quality. With 14 more problems per 100 vehicles, Infiniti is ranked 9th.

Engine Comparison

The 6 Series’ 4.4 DOHC V8 produces 45 more horsepower (325 vs. 280) and 60 lbs.-ft. more torque (330 vs. 270) than the G35 Coupe’s standard 3.5 DOHC V6. The 6 Series’ 4.4 DOHC V8 produces 27 more horsepower (325 vs. 298) and 70 lbs.-ft. more torque (330 vs. 260) than the G35 Coupe 6 speed’s standard 3.5 DOHC V6.

As tested in Motor Trend the BMW 6 Series is faster than the Infiniti G35 Coupe (base engine) (manual transmissions tested):

6 Series

G35 Coupe

Zero to 60 MPH

5.3 sec

5.8 sec

Quarter Mile

13.7 sec

14.2 sec

Speed in 1/4 Mile

102.6 MPH

99.4 MPH

For more instantaneous acceleration and better engine flexibility in any gear, the 6 Series’ engine produces its peak torque at lower RPM’s than the G35 Coupe:


6 Series 4.4 DOHC V8

3600 RPM

G35 Coupe 3.5 DOHC V6

4800 RPM

G35 Coupe 6 speed 3.5 DOHC V6

4800 RPM

Brakes and Stopping Comparison

For better stopping power the 6 Series’ brake rotors are larger than those on the G35 Coupe:

6 Series

G35 Coupe

Front Rotors

13.7 inches

12.6 inches

Rear Rotors

13.6 inches

12.1 inches

The 6 Series stops shorter than the G35 Coupe:

6 Series

G35 Coupe

80 to 0 MPH

196 feet

199 feet

Road & Track

60 to 0 MPH

111 feet

117 feet

Road & Track

Tires and Wheels Comparison

For better traction, the 6 Series has larger standard tires than the G35 Coupe (245/45R18 vs. 225/50R17). The 6 Series’ optional tires are larger than the largest tires available on the G35 Coupe (F:245/40R19 & R:275/35R19 vs. F:225/45R18 & R:245/45R18).

The 6 Series’ standard tires provide better handling because they have a lower 45 series profile (height to width ratio) which provides a stiffer sidewall than the G35 Coupe’s standard 50 series tires. The 6 Series’ optional 275/35R19 rear tires have a lower 35 series profile than the G35 Coupe’s optional 40 series tires.

For better ride, handling and brake cooling the 6 Series has standard 18 inch wheels. Smaller 17 inch wheels are standard on the G35 Coupe.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the 6 Series can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The G35 Coupe doesn’t offer run-flat tires.

Suspension and Handling Comparison

The 6 Series offers an available active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Infiniti doesn’t offer an active suspension on the G35 Coupe.

For better handling and stability, the track (width between the wheels) on the 6 Series is .8 inches wider in the front and 2 inches wider in the rear than the average track on the G35 Coupe.

The 6 Series’ front to rear weight distribution is more even (51.6% to 48.4%) than the G35 Coupe’s (54% to 46%). This gives the 6 Series more stable handling and braking.

The 645Ci Coupe handles at .94 G’s, while the G35 Coupe pulls only .86 G’s of cornering force in a Car and Driver skidpad test.

The 645Ci Coupe goes through Motor Trend’s slalom faster than the G35 Coupe (67.8 vs. 67.1 MPH).

Passenger Space Comparison

The 6 Series Coupe has 2.7 inches more front shoulder room and .8 inches more rear headroom than the G35 Coupe.

Cargo Capacity Comparison

The 6 Series Coupe has a much larger trunk than the G35 Coupe (13 vs. 7.8 cubic feet).

Ergonomics Comparison

The engine computer on the 6 Series automatically engages the starter until the car starts with one twist of the key and disables the starter while the engine is running. The G35 Coupe’s starter can be accidentally engaged while the engine is running, making a grinding noise and possibly damaging the starter and ring gear.

The 6 Series’ standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. An easy entry system costs extra on the G35 Coupe.

The 6 Series offers an optional heads-up display which projects speed readouts onto the windshield, allowing drivers to view information without diverting their eyes from the road. The G35 Coupe doesn’t offer a heads-up display.

The 6 Series has a lever hand brake in the console, easy to use while keeping both feet free and not impeding entry and exit. The G35 Coupe’s foot pedal parking brake is not handy to use as a hill holding device with a manual transmission.

The 6 Series’ front and rear power windows raise and lower automatically with one touch, especially convenient at tollbooths or drive-up windows. Only the front windows of the G35 Coupe work automatically with one touch.

The G35 Coupe’s standard power locks don’t automatically lock the doors. The 6 Series’ 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.)

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The 6 Series has standard headlight washers to keep headlight output high. The G35 Coupe doesn’t offer headlight washers.

The 6 Series has a standard automatic headlight on/off feature. When the ignition is on, the headlights automatically turn on at dusk and off after dawn. When the ignition turns off, the headlights turn off after a delay timed to allow you to securely get to your front door. The G35 Coupe only offers an optional automatic headlight on/off feature.

To help drivers avoid possible obstacles, the 6 Series has standard cornering lights to illuminate around corners. The G35 Coupe doesn’t offer cornering lights.

The 6 Series’ standard power mirror controls are mounted on the armrest for easy access. The G35 Coupe’s standard power mirror controls are on the dash, hidden behind the steering wheel, where they are awkward to manipulate.

When the 6 Series is put in reverse, the passenger rearview mirror tilts from its original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirror into its original position. The G35 Coupe’s mirror doesn’t automatically adjust for backing.

The 6 Series has standard automatic dimming rear and side view mirrors which automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The G35 Coupe has an automatic rear view mirror, but its side mirrors don’t dim.

To keep a safe, consistent following distance, the 6 Series offers an optional Active Cruise Control, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The G35 Coupe doesn’t offer an adaptive cruise control.

With standard voice command, the 6 Series offers the driver hands free control of the radio, climate controls and the navigation computer by simply speaking. The G35 Coupe doesn’t offer a voice control system.

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