Certified Benz & Beemer Compares 2014 Porsche 911 VS 2014 Jaguar XK Near Scottsdale, AZ

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2014 Porsche 911

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VS

2014 Jaguar XK

Safety Comparison

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The 911 has standard four wheel antilock disc brakes for quicker stops and controlled steering ability, especially under poor traction conditions. Antilock brakes cost extra on the Jaguar XK.

The 911 offers optional Porsche Active Safe, 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 XK offers an available collision warning system without the automated brake feature which would prevent or reduce the collision if the driver fails to react.

The 911 offers all wheel drive to maximize traction under poor conditions, especially in ice and snow. The XK doesn’t offer all wheel drive.

Compared to metal, the 911’s plastic fuel tank can withstand harder, more intrusive impacts without leaking; this decreases the possibility of fire. The Jaguar XK has a metal gas tank.

Both the 911 and the XK have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, traction control and electronic stability systems to prevent skidding.

Warranty Comparison

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The 911’s corrosion warranty is 4 years longer than the XK’s (10 vs. 6 years).

There are over 33 percent more Porsche dealers than there are Jaguar dealers, which makes it easier should you ever need service under the 911’s warranty.

Reliability Comparison

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To reliably power the ignition and other systems and to recharge the battery, the 911 has a standard 175 amp alternator. The XK’s 130 amp alternator isn’t as powerful.

The battery on the 911 is in the trunk, which protects it from hot underhood temperatures which can degrade battery life. By keeping the 911’s battery 20 to 30 degrees cooler, its life is increased by years. The XK’s battery is in the hot engine compartment.

J.D. Power and Associates rated the 911 first among midsize premium sporty cars in their 2013 Initial Quality Study. The XK isn’t in the top three in its category.

J.D. Power and Associates’ 2013 Initial Quality Study of new car owners surveyed provide the statistics that show that Porsche vehicles are better in initial quality than Jaguar vehicles. J.D. Power ranks Porsche first in initial quality, above the industry average. With 24 more problems per 100 vehicles, Jaguar is ranked 9th.

J.D. Power and Associates’ 2013 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Porsche vehicles are more reliable than Jaguar vehicles. J.D. Power ranks Porsche second in reliability, above the industry average. With 70 more problems per 100 vehicles, Jaguar is ranked 27th.

Engine Comparison

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The 911 Turbo S’ 3.8 turbo 6 cyl. produces 10 more horsepower (560 vs. 550) and 14 lbs.-ft. more torque (516 vs. 502) than the XKR-S/XKR-S GT’s optional 5.0 supercharged V8.

As tested in Road & Track the 911 S is faster than the XKR-S (automatics tested):

911

XK

Zero to 30 MPH

1.2 sec

1.9 sec

Zero to 60 MPH

3.5 sec

4.2 sec

Zero to 80 MPH

5.5 sec

6.2 sec

Zero to 100 MPH

8.4 sec

8.6 sec

Quarter Mile

11.8 sec

12.3 sec

In a Motor Trend race course test, the Porsche 911 S Coupe was clocked 3.6 seconds faster than the Jaguar XKR-S Coupe (99.3 sec. vs. 102.9 sec.).

The flat cylinder configuration of the boxer engine in the 911 lowers its center of gravity, enhancing handling stability. The XK doesn’t offer a boxer engine configuration.

Fuel Economy and Range Comparison

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On the EPA test cycle the 911 gets better fuel mileage than the XK:

911

XK

RWD

3.4/Manual

19 city/27 hwy

n/a

3.8 S/Manual

19 city/27 hwy

n/a

3.4 Coupe/Auto

20 city/28 hwy

16 city/24 hwy

V8

3.4 Cabriolet/Auto

20 city/28 hwy

16 city/22 hwy

V8

3.8 S/Auto

19 city/27 hwy

15 city/22 hwy

XKR

AWD

3.4 Coupe/Manual

19 city/27 hwy

n/a

3.4 Cabriolet/Manual

19 city/26 hwy

n/a

3.8 S/Manual

18 city/26 hwy

n/a

3.4/Auto

20 city/28 hwy

n/a

3.8 S/Auto

19 city/26 hwy

n/a

3.8 Turbo/Auto

17 city/24 hwy

n/a

3.8 Turbo S/Auto

17 city/24 hwy

n/a

Regenerative brakes improve the 911’s fuel efficiency by converting inertia back into energy instead of wasting it. The XK doesn’t offer a regenerative braking system.

In heavy traffic or at stoplights the 911 (except GT3)’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The XK doesn’t offer an automatic engine start/stop system.

The 911 GT3’s optional fuel tank has 7.6 gallons more fuel capacity than the XK (23.7 vs. 16.1 gallons).

Brakes and Stopping Comparison

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For better stopping power the 911 Turbo/GT3’s brake rotors are larger than those on the XK:

911 Turbo/GT3

XK

XKR-S GT

Front Rotors

16.1 inches

14 inches

15.7 inches

Rear Rotors

15.4 inches

12.8 inches

15 inches

The 911 with its standard antilock brakes stops much shorter than the XK with antilock brakes:

911

XK

80 to 0 MPH

190 feet

204 feet

Road & Track

70 to 0 MPH

135 feet

163 feet

Car and Driver

60 to 0 MPH

.93 feet

115 feet

Motor Trend

Tires and Wheels Comparison

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For better traction and acceleration, the 911 has larger standard rear tires than the XK (285/35R19 vs. 275/35R19).

Suspension and Handling Comparison

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The 911 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 XK doesn’t offer an active sway bar system.

The 911 GT3 Coupe handles at 1.12 G’s, while the XKR Coupe pulls only .89 G’s of cornering force in a Car and Driver skidpad test.

The 911 S Cabriolet handles at 1.03 G’s, while the XK Convertible pulls only .87 G’s of cornering force in a Car and Driver skidpad test.

The 911 S Coupe goes through Road & Track’s slalom 6.6 MPH faster than the XK Coupe (74.1 vs. 67.5 MPH).

The 911 S Coupe Carrera 4 executes Motor Trend’s “Figure Eight” maneuver quicker than the XKR-S Coupe (23.9 seconds @ .85 average G’s vs. 24.7 seconds @ .81 average G’s).

For better maneuverability, the 911 Turbo/GT3’s turning circle is 1 foot tighter than the XK’s (34.8 feet vs. 35.8 feet).

Chassis Comparison

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The Porsche 911 may be more efficient, handle and accelerate better because it weighs about 550 to 750 pounds less than the Jaguar XK.

The 911 is 11.9 inches shorter than the XK, making the 911 easier to handle, maneuver and park in tight spaces.

To almost totally eliminate engine vibration in the passenger area, the 911 w/Sport Chrono (except w/o Sport Chrono) has an electronically controlled liquid-filled front engine mount. A computer-controlled electric current in the liquid changes its viscosity, allowing the mount to dampen the engine completely at all RPMs. The XK uses conventional solid rubber engine mounts.

The design of the Porsche 911 amounts to more than styling. The 911 offers aerodynamic coefficients of drag from .29 to .33 Cd (depending on bodystyle and options). That is lower than the XK (.33 to .35). A more efficient exterior helps the 911 go faster and keeps the interior quieter. It also helps the 911 get better fuel mileage.

As tested by Road & Track while under full throttle, the interior of the 911 S Coupe is quieter than the XKR-S Coupe (77 vs. 80 dB).

As tested by Car and Driver while cruising at 70 MPH, the interior of the 911 S Cabriolet is quieter than the XKR-S Convertible (72 vs. 76 dB).

Passenger Space Comparison

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The 911 Coupe has .6 inches more front headroom, 2.8 inches more front legroom, .8 inches more rear headroom and 5.9 inches more rear shoulder room than the XK Coupe.

The 911 Convertible has .2 inches more front headroom and 2.8 inches more front legroom than the XK Convertible.

Cargo Capacity Comparison

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The 911’s standard rear seats fold to accommodate long and bulky cargo. The XK doesn’t offer folding rear seats.

Ergonomics Comparison

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The 911’s instruments include an oil pressure gauge and a temperature gauge – which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The XK has neither an oil pressure gauge nor a temperature gauge.

The 911’s 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 XK’s rear power window switches have to be held the entire time to open or close them fully.

Heated windshield washer nozzles are standard on the 911 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The XK doesn’t offer heated windshield washer nozzles.

To improve rear visibility by keeping the rear window clear, the 911 offers an optional rear wiper. The XK doesn’t offer a rear wiper.

The 911’s standard separate stalk mounted cruise control on/off switch is conveniently located with the rest of the cruise controls. The XK’s standard cruise control must be turned on with a hard to find switch on the dashboard.

Optional Online Services for the 911 allows the driver and passengers access to select programs on their smartphones, including playing internet radio stations, searching the internet and other connected activities without taking their eyes off the road or their hands from the wheel. The XK doesn’t offer factory integrated smartphone program access.

The 911’s available GPS navigation system has a real-time traffic update feature that offers alternative routes to automatically bypass traffic problems. (Service available in a limited number of metro areas.) The XK’s navigation system doesn’t offer real-time traffic updates.

With optional voice command, the 911 offers the driver hands free control of the radio, cell phone and the navigation computer by simply speaking. The XK doesn’t offer a voice control system.

Economic Advantages Comparison

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Insurance will cost less for the 911 owner. The Complete Car Cost Guide estimates that insurance for the 911 will cost $1415 less than the XK over a five-year period.

The 911 will cost the buyer less in the long run because of its superior resale value. Kiplinger’s estimates that the 911 will retain a greater percentage of its original price after three and five years than the XK.

911

XK

Five Year

39% to 43%

31% to 33%

Three Year

54% to 56%

46% to 52%

Intellichoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Porsche 911 will be $13542 to $28042 less than for the Jaguar XK.

Recommendations Comparison

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Intellichoice recognized the Porsche 911 as a “Best Overall Value of the Year” for the 2013 model year.

Car and Driver performed a comparison test in its May 2013 issue and they ranked the Porsche 911 S Cabriolet first. They ranked the Jaguar XKR-S Convertible third.

J.D. Power and Associates rated the 911 second among midsize premium sporty cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The XK isn’t in the top three.

The 911 was chosen as one of Automobile Magazine’s “All Stars” for 6 of the last 18 years. The XK hasn’t been picked since 1999.

The Porsche 911 outsold the Jaguar XK by almost seven to one during the 2013 model year.

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