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Safety

The X3 offers an optional Top View to allow the driver to see objects all around the vehicle on a screen. The Q5 only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn't help with obstacles to the sides.

 

The X3 offers optional BMW Assist, which uses a global positioning satellite (GPS) receiver and a cellular system to remotely unlock your doors if you lock your keys in, help track down your vehicle if it's stolen or send emergency personnel to the scene if any airbags deploy. The Q5 doesn't offer a GPS response system, only a navigation computer with no live response for emergencies, so if you're involved in an accident and you're incapacitated help may not come as quickly.

 

Both the X3 and the Q5 have standard driver and passenger frontal airbags, head airbags, front seatbelt pretensioners, plastic fuel tanks, four wheel antilock brakes, all wheel drive, traction control and electronic stability systems to prevent skidding.

 

Warranty

 

BMW pays for scheduled maintenance on the X3 for 3 years and 45000 miles longer than Audi pays for maintenance for the Q5 (4/50,000 vs. 1/5000).

 

There are over 33 percent more BMW dealers than there are Audi dealers, which makes it easier to get service under the X3's warranty.

 

Reliability

 

The camshafts in the X3's engine are driven by a hardened steel chain, with no maintenance needs. The Q5 2.0T 2.0 turbo 4 cyl.'s camshafts are driven by a rubber belt that needs periodic replacement. If the Q5's cam drive belt breaks the engine could be severely damaged when the pistons hit the opened valves.

 

To reliably power the ignition and other systems and to recharge the battery, the X3 has a standard 210 amp alternator. The Q5's standard 150 amp alternator and largest (3.2) 140 amp alternator aren't as powerful.

 

J.D. Power and Associates' surveys of the owners of three-year-old cars provide the long-term dependability statistics that show that BMW vehicles are more reliable than Audi vehicles. J.D. Power ranks BMW 17th in reliability, above the industry average. With 17 more problems per 100 vehicles, Audi is ranked 26th.

 

Engine

 

The X3 xDrive28i's standard 3.0 DOHC 6 cyl. produces 29 more horsepower (240 vs. 211) than the Q5 2.0T's standard 2.0 turbo 4 cyl. The X3 xDrive35i's standard 3.0 turbo 6 cyl. produces 30 more horsepower (300 vs. 270) and 57 lbs.-ft. more torque (300 vs. 243) than the Q5 3.2's standard 3.2 DOHC V6.

 

As tested in Motor Trend the X3 xDrive35i is faster than the Q5 3.2:

	X3	Q5
Zero to 60 MPH	5.3 sec	6.7 sec
Quarter Mile	13.8 sec	15.1 sec
Speed in 1/4 Mile	99.2 MPH	92.6 MPH

 

Fuel Economy and Range

 

On the EPA test cycle the X3 xDrive28i gets better fuel mileage than the Q5 3.2 (19 city/25 hwy vs. 18 city/23 hwy).

 

Regenerative brakes improve the X3's fuel efficiency by converting inertia back into energy instead of wasting it. The Q5 doesn't offer a regenerative braking system.

 

To lower fuel costs and make buying fuel easier, the BMW X3 uses regular unleaded gasoline (premium recommended for maximum performance). The Q5 requires premium, which can cost 20 to 55 cents more per gallon.

 

Brakes and Stopping

 

For better stopping power the X3's brake rotors are larger than those on the Q5:

	X3 xDrive28i	X3 xDrive35i	Q5
Front Rotors	12.9 inches	13 inches	12.6 inches
Rear Rotors	12.9 inches	13 inches	11.8 inches

 

The X3's standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the Q5 are solid, not vented.

 

The X3 stops much shorter than the Q5:

	X3	Q5
60 to 0 MPH	112 feet	122 feet	Motor Trend

 

Tires and Wheels

 

For better traction, the X3 has larger tires than the Q5 (245/55R17 vs. 235/60R18).

 

The X3 xDrive35i handles at .87 G's, while the Q5 pulls only .80 G's of cornering force in a Motor Trend skidpad test.

 

 

For greater off-road capability the X3 has a greater minimum ground clearance than the Q5 (8.5 vs. 7.9 inches), allowing the X3 to travel over rougher terrain without being stopped or damaged.

 

Passenger Space

 

The X3 has 1.3 inches more front headroom and .1 inches more rear headroom than the Q5.

 

Ergonomics

 

The X3 offers an optional heads-up display which projects speed and other key instrumentation readouts onto the windshield, allowing drivers to view information without diverting their eyes from the road. The Q5 doesn't offer a heads-up display.

 

If the windows are left down on the X3 the driver can raise them all using the key in the outside lock cylinder. On a hot day the driver can lower the windows from outside the vehicle using the key in the outside lock cylinder or the keyless remote. The driver of the Q5 can't use the remote to operate the windows.

 

Both the X3 and the Q5 offer optional heated front seats. The X3 also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren't available in the Q5.