2019 BMW 7 Series vs. 2018 Infiniti Q70

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 2020/06/04

The 7 Series has standard Post-Crash Braking, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Q70 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.

An active infrared night vision system optional on the 7 Series helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera and near-infrared lights to detect heat, the system then projects the image on the windshield, near the driver’s line of sight. The Q70 doesn’t offer a night vision system.

The 7 Series’ 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 Q70 doesn’t offer a driver alert monitor.

Compared to metal, the 7 Series’ plastic fuel tank can withstand harder, more intrusive impacts without leaking; this decreases the possibility of fire. The Infiniti Q70 has a metal gas tank.

Both the 7 Series and the Q70 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, daytime running lights, rearview cameras, available all wheel drive and around view monitors.

Warranty

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The 7 Series’ corrosion warranty is 5 years longer than the Q70’s (12 vs. 7 years).

BMW pays for scheduled maintenance on the 7 Series 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 Q70.

There are over 60 percent more BMW dealers than there are Infiniti dealers, which makes it much easier should you ever need service under the 7 Series’ warranty.

Reliability

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To reliably power the ignition and other systems and to recharge the battery, the 7 Series has a standard 180-amp alternator (250-amp - 7 Series optional). The Q70’s standard 130-amp alternator and largest (optional) 150-amp alternator aren’t as powerful.

The battery on the 7 Series is in the trunk, which protects it from hot underhood temperatures which can degrade battery life. By keeping the 7 Series’ battery 20 to 30 degrees cooler, its life is increased by years. The Q70’s battery is in the hot engine compartment.

J.D. Power and Associates’ 2017 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 6th in initial quality, above the industry average. With 19 more problems per 100 vehicles, Infiniti is ranked 23rd, below the industry average.

From surveys of all its subscribers, Consumer Reports’ April 2018 Auto Issue reports that BMW vehicles are more reliable than Infiniti vehicles. Consumer Reports ranks BMW 2 places higher in reliability than Infiniti.

Engine

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The 7 Series has more powerful engines than the Q70:

 

Horsepower

Torque

740i 3.0 turbo 6 cyl.

320 HP

330 lbs.-ft.

740e 2.0 turbo 4 cyl. hybrid

322 HP

369 lbs.-ft.

750i 4.4 turbo V8

443 HP

479 lbs.-ft.

Alpina B7 4.4 turbo V8

600 HP

590 lbs.-ft.

M760i 6.6 turbo V12

601 HP

590 lbs.-ft.

Q70 3.7 LUXE 3.7 DOHC V6

330 HP

270 lbs.-ft.

Q70 Hybrid LUXE 3.5 DOHC V6

360 HP

n/a

Q70 5.6 LUXE 5.6 DOHC V8

420 HP

417 lbs.-ft.

As tested in Motor Trend the BMW 7 Series is faster than the Q70 5.6 LUXE:

 

750i

Alpina B7

Q70

Zero to 60 MPH

4.3 sec

3.4 sec

4.8 sec

Quarter Mile

12.7 sec

11.6 sec

13.3 sec

Speed in 1/4 Mile

111.9 MPH

122 MPH

108.5 MPH

As tested in Car and Driver the Alpina B7 is faster than the Q70 3.7 LUXE:

 

7 Series

Q70

Zero to 60 MPH

3.4 sec

5.6 sec

Zero to 100 MPH

7.8 sec

13.9 sec

5 to 60 MPH Rolling Start

4.3 sec

5.8 sec

Quarter Mile

11.6 sec

14.1 sec

Speed in 1/4 Mile

122 MPH

101 MPH

Top Speed

193 MPH

193 MPH

Fuel Economy and Range

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On the EPA test cycle the 740e on a full charge gets better fuel mileage than the Q70 Hybrid (62 city/68 hwy MPGe vs. 28 city/33 hwy).

On the EPA test cycle the 7 Series gets better fuel mileage than the Q70:

 

 

7 Series

Q70

 

RWD

740i/Auto

21 city/29 hwy

18 city/25 hwy

3.7/Auto

 

750i/Auto

18 city/26 hwy

16 city/24 hwy

5.6/Auto

AWD

740i/Auto

20 city/29 hwy

18 city/24 hwy

3.7/Auto

 

750i/Auto

17 city/25 hwy

16 city/23 hwy

5.6/Auto

 

B7/Auto

17 city/25 hwy

n/a

 

The 740e’s maximum driving range in pure electric mode is 14 miles, about 12 times as far as the Q70 Hybrid LUXE’s 1.2 mile range.

Regardless of its engine, regenerative brakes improve the 7 Series’ fuel efficiency by converting inertia back into energy instead of wasting it. Infiniti only offers a regenerative brake system on the Q70 Hybrid.

Regardless of its engine, the 7 Series’ 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 Q70 Hybrid.

Transmission

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An eight-speed automatic is standard on the BMW 7 Series, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the Q70.

The 7 Series’ 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 Q70 doesn’t offer launch control.

Brakes and Stopping

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For better stopping power the 7 Series’ brake rotors are larger than those on the Q70:

 

740i/740e

750i

750i opt.

Q70

Q70 Sport

Front Rotors

13.7 inches

14.7 inches

15.5 inches

12.6 inches

14 inches

Rear Rotors

13.6 inches

13.6 inches

14.5 inches

12.1 inches

13.8 inches

The 7 Series stops much shorter than the Q70:

 

7 Series

Q70

 

70 to 0 MPH

151 feet

171 feet

Car and Driver

60 to 0 MPH

113 feet

120 feet

Motor Trend

Tires and Wheels

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For better traction, the Alpina B7’s optional tires are larger than the largest tires available on the Q70 (F:255/35R21 & R:295/30R21 vs. 245/40R20).

The Alpina B7’s optional 255/35R21 front and 295/30R21 rear tires provide better handling because they have a lower 35 series front and 30 series rear profile (height to width ratio) that provides a stiffer sidewall than the Q70’s optional 40 series tires.

For better ride, handling and brake cooling the Alpina B7 offers optional 21-inch wheels. The Q70’s largest wheels are only 20-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the 7 Series can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Q70 doesn’t offer run-flat tires.

Suspension and Handling

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The 7 Series has standard front and rear gas-charged shocks for better control over choppy roads. The Q70’s suspension doesn’t offer gas-charged shocks.

The 7 Series 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 Q70 doesn’t offer an active sway bar system.

The front and rear suspension of the 7 Series uses air springs for a smoother, controlled ride than the Q70, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The 7 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 Q70.

The 7 Series has a standard driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The Q70’s suspension doesn’t offer adjustable shock absorbers.

The 7 Series has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The 7 Series’ height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The Q70 doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the 7 Series’ wheelbase is 6.3 inches longer than on the Q70L (126.4 inches vs. 120.1 inches).

For better handling and stability, the track (width between the wheels) on the 7 Series is 1.5 inches wider in the front and 2.9 inches wider in the rear than the average track on the Q70.

The Alpina B7 handles at .97 G’s, while the Q70 3.7 LUXE pulls only .82 G’s of cornering force in a Car and Driver skidpad test.

The 750i xDrive executes Motor Trend’s “Figure Eight” maneuver 1.5 seconds quicker than the Q70 Hybrid LUXE (25.4 seconds @ .75 average G’s vs. 26.9 seconds @ .68 average G’s).

Chassis

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The front grille of the 7 Series uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Q70 doesn’t offer active grille shutters.

As tested by Car and Driver, the interior of the 750i xDrive is quieter than the Q70 3.7 LUXE:

 

7 Series

Q70

At idle

38 dB

39 dB

Full-Throttle

72 dB

77 dB

70 MPH Cruising

68 dB

73 dB

Passenger Space

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Because it has more passenger and cargo room, the EPA rates the 7 Series a Large car, while the Q70 is rated a Mid-size.

The 7 Series has 10.4 cubic feet more passenger volume than the Q70 (114 vs. 103.6).

The 7 Series has .8 inches more front headroom, .8 inches more front shoulder room, 1.2 inches more rear headroom, 8.2 inches more rear legroom and 1 inch more rear shoulder room than the Q70.

For enhanced passenger comfort on long trips the 7 Series’ available rear seats recline. The Q70’s rear seats don’t recline.

Cargo Capacity

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A low lift-over trunk design makes loading and unloading the 7 Series easier. The 7 Series’ trunk lift-over height is 27.2 inches, while the Q70’s liftover is 29.1 inches.

To make loading and unloading groceries and cargo easier when your hands are full, the 7 Series’ power trunk can be opened or closed just by kicking your foot under the back bumper, leaving your hands completely free. The Q70 doesn’t offer a power or hands-free opening trunk.

Servicing Ease

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The 7 Series has a maintenance free battery for long life without checking the battery’s water level. The Q70 doesn’t have a maintenance free battery, so the water level in the battery’s cells must be checked often to prevent damage.

Ergonomics

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The 7 Series offers a remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The Q70 doesn’t offer a remote starting system.

Unlike the driver-only memory system in the Q70, the 7 Series 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 7 Series 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 Q70 doesn’t offer a heads-up display.

The power windows standard on both the 7 Series and the Q70 have locks to prevent small children from operating them. When the lock on the 7 Series is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Q70 prevents the driver from operating the other windows just as it does the other passengers.

The 7 Series’ front and rear power windows all open or close fully with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside the car. The Q70’s rear power window switches have to be held the entire time to open or close them fully.

While driving with high beams on, sensitive light sensors standard on the 7 Series detect other vehicles which could be blinded and automatically switch to low beams. The Q70 doesn’t offer automatic dimming high beams.

Optional air conditioned front and rear seats keep the 7 Series’ passengers comfortable and take the sting out of hot leather in summer. The Q70 doesn’t offer air-conditioned seats in the rear.

Standard BMW Apps for the 7 Series allows the driver and passengers access to select programs on their smartphones, including reading text messages aloud, playing internet radio stations, tagging songs to buy them later, following twitter accounts and other connected activities without taking their eyes off the road or their hands from the wheel. The Q70 doesn’t offer factory integrated smartphone program access.

The 7 Series’ optional Parking Assistant can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The Q70 doesn’t offer an automated parking system.

Economic Advantages

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Insurance will cost less for the 7 Series owner. The Car Book by Jack Gillis rates the 7 Series with a number “1” insurance rate while the Q70 is rated higher at a number “5” rate.

Recommendations

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Consumer Reports® recommends both the BMW 7 Series and the Infiniti Q70, based on reliability, safety and performance.

The BMW 7 Series outsold the Infiniti Q70 by 61% during 2017.

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