The Jaguar XJ R 5.0 V8 (575 hp) Automatic, produced from 2017 to 2018, represents the pinnacle of performance within the X351 facelift generation of the XJ luxury sedan. This variant, positioned as the flagship model, offered a substantial increase in power and dynamic capability compared to other trims in the XJ lineup. It built upon the foundation of the X351, introduced in 2009 and significantly updated in 2015, which aimed to blend traditional Jaguar luxury with modern technology and lightweight construction. The XJ R served as Jaguar’s direct competitor to high-performance luxury sedans from BMW, Mercedes-Benz, and Porsche.
Technical Specifications
| Brand | Jaguar |
| Model | XJ |
| Generation | XJ (X351 facelift 2015) |
| Type (Engine) | R 5.0 V8 (575 Hp) Automatic |
| Start of production | 2017 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 11.1 l/100 km |
| Fuel consumption (US mpg) | 21.2 US mpg |
| Fuel consumption (UK mpg) | 25.4 UK mpg |
| Fuel consumption (km/l) | 9 km/l |
| CO2 emissions | 264 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.4 sec |
| Acceleration 0 – 62 mph | 4.4 sec |
| Acceleration 0 – 60 mph | 4.2 sec |
| Maximum speed | 300 km/h (186.41 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 3.3 kg/Hp |
| Weight-to-torque ratio | 2.7 kg/Nm |
| Power | 575 Hp @ 6250-6500 rpm |
| Power per litre | 115 Hp/l |
| Torque | 700 Nm @ 3500-4500 rpm (516.29 lb.-ft. @ 3500-4500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | 508PS |
| Engine displacement | 5000 cm3 (305.12 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 92.5 mm (3.64 in.) |
| Piston Stroke | 93 mm (3.66 in.) |
| Compression ratio | 9.6:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Supercharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 7.25 l (7.66 US qt | 6.38 UK qt) |
| Coolant capacity | 8.6 l (9.09 US qt | 7.57 UK qt) |
| Kerb Weight | 1875 kg (4133.67 lbs.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Length | 5130 mm (201.97 in.) |
| Width | 1899 mm (74.76 in.) |
| Width including mirrors | 2105 mm (82.87 in.) |
| Height | 1460 mm (57.48 in.) |
| Wheelbase | 3032 mm (119.37 in.) |
| Front track | 1626 mm (64.02 in.) |
| Rear track | 1604 mm (63.15 in.) |
| Drivetrain | Rear wheel drive |
| Number of gears | 8 |
| Gearbox type | Automatic transmission |
| Front suspension | Double wishbone |
| Rear suspension | Double wishbone |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric |
Powertrain & Engine Architecture
The heart of the XJ R is Jaguar’s 5.0-liter supercharged V8 engine, designated as the 508PS unit. This engine is a significant evolution of Jaguar’s long-standing V8 design, featuring a Roots-type supercharger with an intercooler to enhance power output. The engine utilizes direct fuel injection, optimizing combustion efficiency and contributing to its impressive power delivery. The valvetrain employs double overhead camshafts (DOHC) with four valves per cylinder, ensuring optimal gas flow. The engine produces 575 horsepower at 6250-6500 rpm and a substantial 700 Nm (516 lb-ft) of torque between 3500 and 4500 rpm. This power is channeled through an eight-speed automatic transmission, providing smooth and responsive gear changes. The transmission is calibrated for performance, with quicker shift times and a more aggressive shift strategy compared to the standard XJ automatic.
Driving Characteristics
The XJ R delivers a markedly different driving experience compared to the naturally aspirated or diesel-powered XJ variants. The supercharged V8 provides effortless acceleration, with the car capable of reaching 60 mph in approximately 4.2 seconds. The eight-speed automatic transmission is well-matched to the engine’s power characteristics, offering both rapid upshifts and downshifts. The suspension, while retaining the XJ’s focus on ride comfort, is firmer and more controlled in the R model, reducing body roll during cornering. The rear-wheel-drive configuration contributes to a balanced and engaging driving experience. While not a dedicated sports sedan, the XJ R offers a compelling blend of performance and luxury.
Equipment & Trim Levels
The XJ R came standard with a comprehensive array of luxury features. Interior appointments included premium leather upholstery, wood veneer trim, and heated and ventilated front seats with massage function. Standard technology included a touchscreen infotainment system with navigation, a premium sound system, and a suite of driver-assistance features such as adaptive cruise control, lane departure warning, and blind-spot monitoring. Optional extras included a panoramic sunroof, rear-seat entertainment system, and upgraded leather options. The exterior styling of the R model was distinguished by unique alloy wheel designs, a revised front bumper with larger air intakes, and a rear spoiler.
Chassis & Braking
The XJ R utilizes a lightweight aluminum chassis, a key element in the X351’s design. The suspension system employs double wishbones at both the front and rear, providing a comfortable yet controlled ride. The braking system features ventilated discs on all four wheels, providing ample stopping power. The R model benefits from larger brake rotors and calipers compared to other XJ trims. An electronic parking brake and anti-lock braking system (ABS) are standard features.
Market Reception & Comparison
The XJ R was generally well-received by automotive critics, who praised its powerful engine, luxurious interior, and refined driving experience. However, some reviewers noted that its fuel economy was relatively poor compared to its competitors. Compared to the standard XJ with the 3.0-liter supercharged V6, the R offered a significant performance upgrade but at a higher price point. Against rivals like the BMW 750i and Mercedes-Benz S550, the XJ R offered a unique blend of British luxury and performance, though it often lagged behind in terms of outright technology and brand prestige.
Legacy
The 5.0-liter supercharged V8 engine proved to be a robust and reliable powerplant, although maintenance costs can be higher than those associated with smaller engines or diesel alternatives. The XJ R, while not a high-volume seller, has gained a following among enthusiasts who appreciate its combination of performance, luxury, and distinctive styling. On the used car market, well-maintained examples of the XJ R command a premium price, reflecting their desirability and relative rarity. The X351 generation, and particularly the R variant, represents a high point in Jaguar’s modern history, showcasing the brand’s commitment to both luxury and performance.
