SONS Automotive Group Compares 2015 Jaguar XJ VS 2015 BMW 7 Near Tucker, GA

Responsive image

2015 Jaguar XJ

Responsive image

2015 Jaguar XJ

Responsive image

2015 BMW 7

Safety Comparison

For enhanced safety, the front and rear seat shoulder belts of the Jaguar XJ have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The BMW 7 Series doesn’t offer pretensioners for the rear seat belts.

For enhanced safety, the front seat shoulder belts of the Jaguar XJ 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 7 Series doesn’t offer height-adjustable seat belts.

Both the XJ and the 7 Series have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras and available collision warning systems.

Reliability Comparison

J.D. Power and Associates’ 2014 Initial Quality Study of new car owners surveyed provide the statistics that show that Jaguar vehicles are better in initial quality than BMW vehicles. J.D. Power ranks Jaguar second in initial quality, above the industry average. With 21 more problems per 100 vehicles, BMW is ranked 8th.

Engine Comparison

The XJ has more powerful engines than the 7 Series:


XJ 3.0 supercharged V6

340 HP

XJ Supercharged 5.0 V8

470 HP

XJR 5.0 supercharged V8

550 HP

740i 3.0 turbo 6 cyl.

315 HP

ActiveHybrid 7 3.0 turbo 6 cyl.

350 HP

750i 4.4 turbo V8

445 HP

760Li 6.0 turbo V12

535 HP

Alpina B7 4.4 turbo V8

540 HP

As tested in Motor Trend the XJ Supercharged 5.0 is faster than the Alpina B7:


7 Series

Zero to 60 MPH

4 sec

4.3 sec

Quarter Mile

12.3 sec

12.6 sec

Speed in 1/4 Mile

116.3 MPH

113.6 MPH

Fuel Economy and Range Comparison

Regardless of its engine, the XJ’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.) The 7 Series 760Li doesn’t offer an automatic engine start/stop system.

The XJ has 1.6 gallons more fuel capacity than the 7 Series Hybrid’s standard fuel tank (21.7 vs. 20.1 gallons), for longer range between fill-ups.

Brakes and Stopping Comparison

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


XJ Supercharged/XJR



Front Rotors

14 inches

15 inches

13.7 inches

14.7 inches

Rear Rotors

12.8 inches

14.8 inches

13.6 inches

14.6 inches

The XJ stops much shorter than the 7 Series:


7 Series

80 to 0 MPH

202 feet

210 feet

Road & Track

70 to 0 MPH

158 feet

171 feet

Car and Driver

60 to 0 MPH

114 feet

120 feet

Road & Track

Tires and Wheels Comparison

For better traction, the XJR’s tires are larger than the largest tires available on the 7 Series (F:265/35R20 & R:295/30R20 vs. F:245/35R21 & R:285/30R21).

The XJ’s standard 245/45R19 front and 275/40R19 rear tires provide better handling because they have a lower 45 series front and 40 series rear profile (height to width ratio) that provides a stiffer sidewall than the 740i’s standard 50 series tires.

For better ride, handling and brake cooling the XJ has standard 19-inch wheels. Smaller 18-inch wheels are standard on the 740i.

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

The XJ Supercharged handles at .87 G’s, while the 750Li pulls only .82 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the XJ’s turning circle is tighter than the 7 Series’:


7 Series

SWB Sedan

39 feet

40 feet

LWB Sedan

41.7 feet

41.7 feet


40.7 feet

41 feet


42.3 feet

42.7 feet

Chassis Comparison

The Jaguar XJ may be more efficient, handle and accelerate better because it weighs about 450 to 900 pounds less than the BMW 7 Series.

Passenger Space Comparison

The XJ has .2 inches more front legroom and .1 inches more rear legroom than the 7 Series SWB.

Cargo Capacity Comparison

The XJ has a much larger trunk than the 7 Series SWB (15.2 vs. 14 cubic feet).

Ergonomics Comparison

The XJ has a standard heated steering wheel to take the chill out of steering on extremely cold Winter days before the car heater warms up. A heated steering wheel costs extra on the 7 Series.

Recommendations Comparison

Road & Track performed a comparison test in its October 2011 issue and they ranked the Jaguar XJL Supercharged higher than the BMW 750Li.

The XJ was chosen as one of Automobile Magazine’s “All Stars” in 2011. The 7 Series has never been an “All Star.”

© 1991-2016 Advanta-STAR Automotive Research. All rights reserved. Who We Are
Click here to view the disclaimers, limitations and notices about EPA fuel mileage, crash tests, coprights, trademarks, and other issues.