2021 BMW 5 Series Sedan vs. 2020 Infiniti Q50

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/10/27

The 5 Series Sedan has standard PostCrash iBrake, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Q50 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

A passive infrared night vision system optional on the 5 Series Sedan helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The Q50 doesn’t offer a night vision system.

The 5 Series Sedan’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Q50 doesn’t offer a driver alert monitor.

Both the 5 Series Sedan and the Q50 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, crash mitigating brakes, daytime running lights, rearview cameras, available all wheel drive and around view monitors.

For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard front crash prevention system, and its headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the 5 Series Sedan its highest rating: “Top Pick Plus” for 2019, a rating granted to only 82 vehicles tested by the IIHS. The Q50 has not been fully tested, yet.

Warranty

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The 5 Series Sedan’s corrosion warranty is 5 years longer than the Q50’s (12 vs. 7 years).

BMW pays for scheduled maintenance on the 5 Series Sedan for 3 years and 36,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Infiniti doesn’t pay scheduled maintenance for the Q50.

There are over 70 percent more BMW dealers than there are Infiniti dealers, which makes it much easier should you ever need service under the 5 Series Sedan’s warranty.

Reliability

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J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that BMW vehicles are more reliable than Infiniti vehicles. J.D. Power ranks BMW 7th in reliability, above the industry average. With 6 more problems per 100 vehicles, Infiniti is ranked 11th.

Engine

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

Horsepower

Torque

540i 3.0 turbo 6-cylinder hybrid

335 HP

332 lbs.-ft.

M550i 4.4 turbo V8

523 HP

553 lbs.-ft.

Q50 3.0t 3.0 turbo V6

300 HP

295 lbs.-ft.

Q50 Red Sport 400 3.0 turbo V6

400 HP

350 lbs.-ft.

Fuel Economy and Range

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On the EPA test cycle the 5 Series Sedan gets better fuel mileage than the Q50:

MPG

5 Series Sedan

RWD

530i 2.0 turbo 4-cyl.

25 city/33 hwy

540i 3.0 turbo 6-cyl. Hybrid

25 city/32 hwy

AWD

530i 2.0 turbo 4-cyl.

23 city/32 hwy

540i 3.0 turbo 6-cyl. Hybrid

23 city/31 hwy

Q50

RWD

3.0 turbo V6

20 city/29 hwy

Red Sport 400

20 city/26 hwy

AWD

3.0 turbo V6

19 city/27 hwy

Red Sport 400

19 city/26 hwy

Regenerative brakes improve the 5 Series Sedan’s fuel efficiency by converting inertia back into energy instead of wasting it. The Q50 doesn’t offer a regenerative braking system.

Regardless of its engine, the 5 Series Sedan’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) Infiniti only offers an automatic engine start/stop system on the Q50 2.0t.

Transmission

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An eight-speed automatic is standard on the BMW 5 Series Sedan, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the Q50.

The 5 Series Sedan’s launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The Q50 doesn’t offer launch control.

Brakes and Stopping

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For better stopping power the 5 Series Sedan’s brake rotors are larger than those on the Q50:

530i

M550i

Q50

Q50 Sport/Red Sport 400

Front Rotors

13.7 inches

14.7 inches

12.6 inches

14 inches

Rear Rotors

13 inches

13.6 inches

12.1 inches

13.8 inches

Tires and Wheels

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For better traction, the 5 Series Sedan has larger standard tires than the Q50 (245/45R18 vs. 225/55R17).

The 5 Series Sedan’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the Q50’s standard 55 series tires. The 5 Series Sedan’s optional 245/35R20 front and 275/30R20 rear tires have a lower 35 series front and 30 series rear profile than the Q50 Red Sport 400’s 40 series front and 35 series rear tires.

For better ride, handling and brake cooling the 5 Series Sedan has standard 18-inch wheels. Smaller 17-inch wheels are standard on the Q50. The 5 Series Sedan’s optional 20-inch wheels are larger than the 19-inch wheels on the Q50 Sport/Red Sport 400 AWD.

The 5 Series Sedan offers an optional space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the Q50; 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

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The 5 Series Sedan has standard front and rear gas-charged shocks for better control over choppy roads. The Q50’s suspension doesn’t offer gas-charged shocks.

The 5 Series Sedan 540i/M550i offers active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The Q50 doesn’t offer an active sway bar system.

The M550i offers an available adjustable 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 Q50.

For a smoother ride and more stable handling, the 5 Series Sedan’s wheelbase is 4.9 inches longer than on the Q50 (117.1 inches vs. 112.2 inches).

For better handling and stability, the average track (width between the wheels) on the 5 Series Sedan is 2.5 inches wider in the front and 2.2 inches wider in the rear than the average track on the Q50.

The 5 Series Sedan’s front to rear weight distribution is more even (50.5% to 49.5%) than the Q50’s (55.8% to 44.2%). This gives the 5 Series Sedan more stable handling and braking.

Chassis

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The front grille of the 5 Series Sedan uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Q50 doesn’t offer active grille shutters.

Passenger Space

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The 5 Series Sedan has 2 inches more front shoulder room and 1.4 inches more rear legroom than the Q50.

Cargo Capacity

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The 5 Series Sedan has a larger trunk than the Q50 (14 vs. 13.5 cubic feet).

The 5 Series Sedan’s standard rear seats fold to accommodate long and bulky cargo. The Q50 Pure doesn’t offer folding rear seats, only a ski pass-through.

To make loading and unloading groceries and cargo easier when your hands are full, the 5 Series Sedan’s trunk can be opened just by kicking your foot under the back bumper, leaving your hands completely free. The 5 Series Sedan also offers an optional power trunk, which opens and closes automatically by pressing a button or just by kicking your foot under the back bumper. The Q50 doesn’t offer a power or hands-free opening trunk.

Ergonomics

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Unlike the driver-only memory system in the Q50 Sport/Red Sport 400, the 5 Series Sedan offers an optional passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position, outside mirror angle, climate settings and radio stations and the front passenger seat also adjusts to the new passenger’s preset preferences.

The 5 Series Sedan offers an optional heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Q50 doesn’t offer a heads-up display.

The 5 Series Sedan’s power parking brake sets with one touch and releases with one touch or automatically. The Q50’s parking brake has to released manually.

The power windows standard on both the 5 Series Sedan and the Q50 have locks to prevent small children from operating them. When the lock on the 5 Series Sedan is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Q50 prevents the driver from operating the other windows just as it does the other passengers.

The Insurance Institute for Highway Safety (IIHS) conducts detailed tests on headlights for their range both straight ahead and in curves and to be certain they don’t exceed acceptable amounts of glare to oncoming drivers. The 5 Series Sedan’s available headlights were rated “Good” by the IIHS, while the Q50’s headlights are rated “Acceptable” to “Marginal.”

A power rear sunshade and manual rear side window sunshades are optional in the 5 Series Sedan to help block heat and glare for the rear passengers. The Q50 doesn’t offer a rear or rear side window sunshades.

Both the 5 Series Sedan and the Q50 offer available heated front seats. The 5 Series Sedan also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the Q50.

Optional air-conditioned seats in the 5 Series Sedan keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The Q50 doesn’t offer air-conditioned seats.

The 5 Series Sedan offers optional massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the Q50.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the BMW 5 Series offers an optional wireless phone charging system (Qi) in the center console. The Q50 doesn’t offer wireless personal charging.

The 5 Series Sedan’s optional Parking Assistant Plus can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. Optional Remote Control Parking will park and retrieve your car remotely: press a button and watch it park itself. This is ideal for tight locations. The Q50 doesn’t offer an automated parking system.

Economic Advantages

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According to The Car Book by Jack Gillis, the 5 Series Sedan is less expensive to operate than the Q50 because it costs $318 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the 5 Series Sedan than the Q50, including $55 less for front struts and $402 less for a power steering pump.

Recommendations

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/10/27

The BMW 5 Series outsold the Infiniti Q50 by 49% during 2019.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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