2011 Jaguar XJ L Supercharged Road Test Specs | Edmunds.com
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2011 Jaguar XJ - Road Test Specs

2011 Jaguar XJ Sedan

(5.0L V8 Supercharger 6-speed Automatic)

Vehicle

Model year2011
MakeJaguar
ModelXJ
StyleXJ L Supercharged 4dr Sedan (5.0L 8cyl S/C 6A)
Base MSRP$89,650
Options on test vehicleBurl Walnut Veneer ($0); Leather Steering Wheel ($0); Canvas-Colored Headliner ($0).
As-tested MSRP$90,500

Drivetrain

Drive typeRear-wheel Drive
Engine typeSupercharged, direct-injected V8
Displacement (cc/cu-in)5,000cc (305 cu-in)
Block/head materialAluminum/aluminum
ValvetrainDOHC, four valves per cylinder, variable intake + exhaust-valve timing
Compression ratio (x:1)9.5
Horsepower (hp @ rpm)470 @ 6,000
Torque (lb-ft @ rpm)424 @ 2,500
Fuel typePremium unleaded (required)
Transmission typeSix-speed automatic
Transmission and axle ratios (x:1)I=4.017; II=2.43; III=1.52; IV=1.14: V=0.87; VI=0.69 Final drive=3.31

Chassis

Suspension, frontIndependent double wishbones, coil springs, self-adjusting two-mode variable dampers, stabilizer bar
Suspension, rearIndependent multilink, coil springs, self-adjusting two-mode variable dampers, stabilizer bar
Steering typeHydraulic-assist, speed-proportional rack-and-pinion power steering
Tire brandDunlop
Tire modelSP Sport Maxx GT J
Tire typePerformance front and rear
Tire size, front245/40ZR20
Tire size, rear274/35ZR20
Wheel size20-by-9 inches front -- 20-by-10 inches rear
Wheel materialCast aluminum
Brakes, front15.0-inch ventilated cast-iron discs with 2-piston fixed calipers
Brakes, rear14.8-inch solid cast-iron discs with single-piston sliding calipers

Track Test Results

Acceleration, 0-30 mph (sec.)1.9
0-45 mph (sec.)3.1
0-60 mph (sec.)4.5
0-75 mph (sec.)6.3
1/4-mile (sec. @ mph)12.6 @ 112.4
0-60 with 1 foot of rollout (sec.)4.2
Braking, 30-0 mph (ft.)27
60-0 mph (ft.)106
Slalom, 6 x 100 ft. (mph)62.3
Skid pad, 200-ft. diameter (lateral g)0.84
Sound level @ idle (dB)42.4
@ Full throttle (dB)74.1
@ 70 mph cruise (dB)66.9

Test Driver Ratings & Comments

Acceleration commentsFairly unobtrusive traction control, only a slight stumble. Disabling traction control for a run makes only a slight difference and requires diligence and prudence. There is so much torque that the rear tires light up at only 2,000 rpm! Also noted that if rear tires spin at all, transmission shifts up to 2nd gear. Tried one run in Manual mode, but tachometer is too slow to properly anticipate redline. Upshifts in Sport are fast and smooth. An impressively fast limousine.
Braking commentsTremendously powerful brakes with medium-firm pedal effort and appropriate initial bite. Excellent fade resistance and chassis stability.
Handling commentsSkid pad: For some reason the XJ circled the skid pad slightly quicker counterclockwise with driver outboard. Light-effort steering but remains informative with feedback from tires. When stability control is engaged, the thottle will cut before the brakes are engaged, so soft intervention. Slalom: Remarkably crisp turn into the gates, with buttery-smooth steering action. The car feels smaller and lighter than it is, though the long wheelbase means you inadvertently run down the cones! Well-tuned stability control only dabs the brakes before returning control to the driver.

Testing Conditions

Elevation (ft.)1,121
Temperature (F)96
Relative humidity (%)23.8
Wind (mph, direction)10.8 headwind

Fuel Consumption

EPA fuel economy (mpg)15 city/21 highway/17 combined
Fuel tank capacity (U.S. gal.)21.7

Dimensions & Capacities

Curb weight, mfr. claim (lbs.)4,323
Curb weight, as tested (lbs.)4,341
Weight distribution, as tested, f/r (%)51.5/48.5
Length (in.)206.6
Width (in.)74.6
Height (in.)57.0
Wheelbase (in.)124.3
Track, front (in.)64.0
Track, rear (in.)63.1
Turning circle (ft.)41.7
Legroom, front (in.)41.5
Legroom, rear (in.)44.1
Seating capacity5
Cargo volume (cu-ft)15.2

Warranty

Bumper-to-bumper5 years/50,000 miles
Powertrain5 years/50,000 miles
Corrosion6 years/Unlimited miles
Roadside assistance5 years/50,000 miles
Free scheduled maintenance5 years/50,000 miles

Safety

Front airbagsStandard
Side airbagsDual front
Head airbagsFront and rear
Antilock brakesFour-wheel ABS
Electronic brake enhancementsElectronic brakeforce distribution
Traction controlTraction control
Stability controlStability control
Tire-pressure monitoring systemTire-pressure monitoring
Emergency assistance systemBlind spot warning
NHTSA crash test, driverNot tested
NHTSA crash test, passengerNot tested
NHTSA crash test, side frontNot tested
NHTSA crash test, side rearNot tested
NHTSA rollover resistanceNot tested
IIHS offsetNot tested
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