The 7 Series offers optional City Collision Mitigation, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The XJ offers an available collision warning system without the automated brake feature that would prevent or reduce the collision if the driver fails to react.
Over 200 people are killed each year when backed over by motor vehicles. The 7 Series offers an optional backup collision prevention system which use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The XJ doesn’t offer backup collision prevention brakes.
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 XJ doesn’t offer a night vision system.
The 7 Series’ optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. The XJ doesn’t offer a lane departure warning 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 XJ doesn’t offer a driver alert monitor.
Both the 7 Series and the XJ 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 blind spot warning systems, around view monitors and rear cross-path warning.
The 7 Series’ corrosion warranty is 6 years longer than the XJ’s (12 vs. 6 years).
There are over 2 times as many BMW dealers as there are Jaguar dealers, which makes it much easier should you ever need service under the 7 Series’ warranty.
As tested in Car and Driver the 750i 4.4 turbo V8 is faster than the Jaguar XJ S.C. V6:
7 Series |
XJ |
|
Zero to 60 MPH |
4.4 sec |
5.2 sec |
Zero to 100 MPH |
10.1 sec |
12.7 sec |
5 to 60 MPH Rolling Start |
5.2 sec |
5.5 sec |
Quarter Mile |
12.8 sec |
13.8 sec |
Speed in 1/4 Mile |
112 MPH |
104 MPH |
Top Speed |
155 MPH |
125 MPH |
On the EPA test cycle the 740i RWD gets better fuel mileage than the XJ RWD S.C. V6 (21 city/29 hwy vs. 18 city/27 hwy).
Regenerative brakes improve the 7 Series’ fuel efficiency by converting inertia back into energy instead of wasting it. The XJ doesn’t offer a regenerative braking system.
For better stopping power the 750i’s brake rotors are larger than those on the XJ:
750i |
XJ |
XJ Supercharged/XJR |
|
Front Rotors |
15.5 inches |
14 inches |
15 inches |
The 7 Series stops shorter than the XJ:
7 Series |
XJ |
||
60 to 0 MPH |
113 feet |
121 feet |
Motor Trend |
For better ride, handling and brake cooling the 7 Series offers optional 21-inch wheels. The XJ’s largest wheels are only 20-inches.
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard 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 XJ doesn’t offer run-flat tires.
The 7 Series has standard front and rear gas-charged shocks for better control over choppy roads. The XJ’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 XJ 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 XJ, which uses coil springs in front. 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. Jaguar doesn’t offer an active suspension on the XJ.
For a smoother ride and more stable handling, the 7 Series’ wheelbase is 2.1 inches longer than on the XJL (126.4 inches vs. 124.3 inches).
For better handling and stability, the track (width between the wheels) on the 7 Series is 1.9 inches wider in the rear than on the XJ.
The 750i xDrive handles at .88 G’s, while the XJL Supercharged pulls only .85 G’s of cornering force in a Car and Driver skidpad test.
The 750i xDrive executes Motor Trend’s “Figure Eight” maneuver 1 seconds quicker than the XJL Portfolio (25.4 seconds @ .75 average G’s vs. 26.4 seconds @ .66 average G’s).
For better maneuverability, the 740i’s turning circle is .3 feet tighter than the XJL AWD’s (42 feet vs. 42.3 feet).
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 XJ doesn’t offer active grille shutters.
As tested by Car and Driver, the interior of the 750i xDrive is quieter than the XJ Supercharged:
7 Series |
XJ |
|
At idle |
38 dB |
42 dB |
Full-Throttle |
72 dB |
74 dB |
70 MPH Cruising |
68 dB |
68 dB |
The 7 Series has 1.3 inches more front headroom, 1.6 inches more front shoulder room, 1.7 inches more rear headroom, 5.4 inches more rear legroom and 1.1 inches more rear shoulder room than the XJ.
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 XJ’s liftover is 28.5 inches.
To make loading groceries and cargo easier when your hands are full, the 7 Series’ trunk can be opened and closed just by kicking your foot under the back bumper, leaving your hands completely free. The XJ doesn’t offer a hands-free gesture to open its trunk, forcing you to put cargo down if your hands are full.
The 7 Series offers an optional heads-up display which 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 XJ doesn’t offer a heads-up display.
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