Certified Benz & Beemer Compares 2015 Infiniti Q50 VS 2015 BMW 5 Near Phoenix, AZ

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2015 Infiniti Q50

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2015 BMW 5

Safety Comparison

The Q50 Premium/Sport’s optional front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The 5 Series Sedan doesn’t offer pre-crash pretensioners.

For enhanced safety, the front seat shoulder belts of the Infiniti Q50 are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The BMW 5 Series Sedan doesn’t offer height-adjustable seat belts.

Over 200 people are killed each year when backed over by motor vehicles. The Q50 Premium/Sport offers optional Back-up Collision Intervention which use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The 5 Series Sedan doesn’t offer backup collision prevention brakes.

To help make backing safer, the Q50 Premium/Sport’s optional cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The 5 Series Sedan doesn’t offer a cross-path warning system.

Both the Q50 and the 5 Series Sedan have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding and available all wheel drive.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Infiniti Q50 is safer than the BMW 5 Series Sedan:


5 Series Sedan



4 Stars

4 Stars

Neck Injury Risk



Neck Stress

223 lbs.

234 lbs.

Leg Forces (l/r)

185/312 lbs.

427/544 lbs.

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

A significantly tougher test than their original offset frontal crash test, the Insurance Institute for Highway Safety does 40 MPH small overlap frontal offset crash tests. In this test, where only 25% of the total width of the vehicle is struck, results indicate that the Infiniti Q50 is safer than the 5 Series Sedan:


5 Series Sedan

Overall Evaluation






Head Neck Evaluation



Steering Column Movement Rearward

0 cm

8 cm

Chest Evaluation



Max Chest Compression

28 cm

32 cm

Hip & Thigh Evaluation



Femur Force R/L

1.5/.1 kN

3.1/1.8 kN

Lower Leg Evaluation



Tibia index R/L



Tibia forces R/L

3.5/.9 kN

5.9/2.5 kN

The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the Infiniti Q50 is safer than the BMW 5 Series Sedan:


5 Series Sedan

Front Seat


5 Stars

5 Stars




Chest Movement

.9 inches

1.2 inches

Into Pole


5 Stars

5 Stars




Spine Acceleration

36 G’s

55 G’s

Hip Force

634 lbs.

759 lbs.

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

For its top level performance in the IIHS moderate overlap frontal impact, side impact, rear impact, roof-crush crash tests, an “Acceptable” rating in the newer small overlap frontal crash test, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the Q50 its highest rating: “Top Pick Plus” for 2014, a rating granted to only 49 vehicles tested by the IIHS. The 5 Series Sedan is not even a standard “Top Pick” for 2014.

Warranty Comparison

The Q50 comes with a full 4 year/60,000 mile basic warranty, which covers the entire car and includes 24 hour roadside assistance. The 5 Series Sedan’s 4 year/50,000 mile basic warranty expires 10,000 miles sooner.

Infiniti’s powertrain warranty covers the Q50 2 years and 20,000 miles longer than BMW covers the 5 Series Sedan. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the 5 Series Sedan ends after only 4 years or 50,000 miles.

Reliability Comparison

J.D. Power and Associates’ 2014 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Infiniti vehicles are more reliable than BMW vehicles. J.D. Power ranks Infiniti 10th in reliability. With 2 more problems per 100 vehicles, BMW is ranked 11th.

Engine Comparison

The Q50 has more powerful engines than the 5 Series Sedan:



Q50 3.7 DOHC V6

328 HP

269 lbs.-ft.

Q50 Hybrid 3.5 DOHC V6

360 HP


528i Sedan 2.0 turbo 4 cyl.

240 HP

260 lbs.-ft.

535i Sedan 3.0 turbo 6 cyl.

300 HP

300 lbs.-ft.

ActiveHybrid 5 3.0 turbo 6 cyl.

335 HP

300 lbs.-ft.

As tested in Car and Driver the Infiniti Q50 V6 is faster than the BMW 5 Series Sedan (automatics tested):


528i Sedan

535i Sedan

Zero to 60 MPH

4.9 sec

5.9 sec

5.4 sec

Zero to 100 MPH

12.3 sec

15.9 sec

14 sec

5 to 60 MPH Rolling Start

5.3 sec

6.8 sec

6 sec

Quarter Mile

13.5 sec

14.5 sec

14 sec

Speed in 1/4 Mile

104 MPH

96 MPH

100 MPH

Fuel Economy and Range Comparison

On the EPA test cycle the Q50 Hybrid gets better fuel mileage than the ActiveHybrid 5:


5 Series Sedan



29 city/36 hwy

23 city/30 hwy

Sport Auto

28 city/34 hwy




28 city/35 hwy


Sport Auto

27 city/31 hwy


The Q50’s standard fuel tank has 1.5 gallons more fuel capacity than the 5 Series Sedan’s standard fuel tank (20 vs. 18.5 gallons).


Brakes and Stopping Comparison

For better stopping power the Q50S’ front brake rotors are larger than those on the 5 Series Sedan:




Front Rotors

14 inches

13.3 inches

13.7 inches

Rear Rotors

13.8 inches

13 inches

13.6 inches

The Q50 stops much shorter than the 5 Series Sedan:


5 Series Sedan

70 to 0 MPH

156 feet

172 feet

Car and Driver

60 to 0 MPH

126 feet

137 feet

Consumer Reports

60 to 0 MPH (Wet)

135 feet

148 feet

Consumer Reports

Tires and Wheels Comparison

The Q50 has a standard space-saver spare (not available on Hybrid) so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the 5 Series Sedan, it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed.

Suspension and Handling Comparison

The Q50’s optional drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The 5 Series Sedan doesn’t offer drift compensation steering.

The 3.7 Q50S handles at .95 G’s, while the 528i Sedan pulls only .85 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the Q50’s turning circle is 2.7 feet tighter than the 5 Series Sedan’s (36.7 feet vs. 39.4 feet). The Q50 AWD’s turning circle is 2.3 feet tighter than the 5 Series Sedan xDrive’s (37.4 feet vs. 39.7 feet).

Chassis Comparison

The Infiniti Q50 may be more efficient, handle and accelerate better because it weighs about 250 to 300 pounds less than the BMW 5 Series Sedan.

The Q50 is 4.8 inches shorter than the 5 Series Sedan, making the Q50 easier to handle, maneuver and park in tight spaces.

The Q50 offers available computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The 5 Series Sedan doesn’t offer active noise cancellation.

Ergonomics Comparison

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the Q50 has standard extendable sun visors. The 5 Series Sedan doesn’t offer extendable visors.

Economic Advantages Comparison

Insurance will cost less for the Q50 owner. The Complete Car Cost Guide estimates that insurance for the Q50 will cost $595 less than the 5 Series Sedan over a five-year period.

The Q50 will cost the buyer less in the long run because of its superior resale value. The Intellichoice estimates that the Q50 will retain 49.48% to 53.59% of its original price after five years, while the 5 Series Sedan only retains 45.74% to 47.21%.

Intellichoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Infiniti Q50 will be $10474 to $19241 less than for the BMW 5 Series Sedan.

Recommendations Comparison

The Infiniti Q50 won the First for Safety award in Kiplinger’s 2014 car issue. The BMW 5 Series Sedan didn't win any award.

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