2012-2013 Jaguar XJ Long (X351) 5.0 V8 (385 Hp) Automatic 8-speed

The Jaguar XJ Long (X351) 5.0 V8, producing 385 horsepower, represented a significant iteration of Jaguar’s flagship sedan. Introduced for the 2012 model year and continuing through 2013, this variant occupied the upper echelon of the XJ Long lineup, offering a blend of luxury, performance, and advanced technology. Built on the X351 platform, the XJ Long aimed to compete with established luxury sedans from BMW, Mercedes-Benz, and Audi, emphasizing rear-seat space and refinement. This particular configuration, pairing the naturally aspirated 5.0-liter V8 with an eight-speed automatic transmission, was positioned as a premium offering, appealing to buyers prioritizing a smooth driving experience and substantial power.

Technical Specifications

INTRODUCTION

The Jaguar XJ Long (X351) 5.0 V8 Automatic, produced from 2012 to 2013, was a luxury sedan designed to provide a refined and powerful driving experience. As part of the fourth generation (X351) XJ series, it built upon Jaguar’s heritage of elegant design and sophisticated engineering. The “Long” designation indicated an extended wheelbase, prioritizing rear passenger legroom. This model was a key component of Jaguar’s strategy to regain market share in the full-size luxury segment, competing directly with vehicles like the BMW 7 Series and Mercedes-Benz S-Class. The 5.0-liter V8 engine, coupled with the ZF 8HP85 eight-speed automatic transmission, delivered a balance of performance and efficiency, making it a desirable option for discerning buyers.

Powertrain & Engine Architecture

At the heart of the XJ Long 5.0 V8 lay Jaguar’s 508PN engine, a naturally aspirated 5.0-liter V8. This engine featured direct fuel injection, a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, and a compression ratio of 11.5:1. The engine produced 385 horsepower at 6500 rpm and 515 Nm (379.84 lb-ft) of torque at 3500 rpm. The 8HP85 eight-speed automatic transmission, sourced from ZF, was a crucial element of the powertrain. This transmission offered smooth and rapid gear changes, contributing to both performance and fuel efficiency. It featured a wide gear ratio spread, allowing for both strong acceleration and relaxed cruising. The transmission was electronically controlled, adapting to driving conditions and driver input.

Driving Characteristics

The XJ Long 5.0 V8 Automatic provided a driving experience characterized by effortless power and refined comfort. The 5.0-liter V8 delivered strong acceleration, with 0-60 mph times of around 5.4 seconds. The eight-speed automatic transmission ensured that the engine remained in its optimal power band, providing responsive performance in various driving situations. Compared to the supercharged 5.0-liter V8 variants, this naturally aspirated version offered a more linear power delivery, prioritizing smoothness over outright aggression. While not as quick as its supercharged sibling, it still provided ample power for overtaking and highway cruising. The long wheelbase contributed to a comfortable ride, absorbing bumps and imperfections in the road effectively.

Equipment & Trim Levels

The XJ Long 5.0 V8 Automatic came standard with a comprehensive array of luxury features. These included leather upholstery, wood veneer trim, a premium sound system, heated and ventilated front seats, and a panoramic sunroof. Standard technology features included a touchscreen infotainment system, navigation, Bluetooth connectivity, and a rear-view camera. Optional extras included upgraded leather packages, rear-seat entertainment systems, and advanced driver-assistance features such as adaptive cruise control and blind-spot monitoring. The XJ Long trim level itself focused on maximizing rear passenger comfort, offering increased legroom and available features like reclining rear seats and massage functions.

Chassis & Braking

The XJ Long featured an aluminum-intensive chassis, contributing to its relatively low weight for a full-size luxury sedan. The front suspension utilized a double wishbone configuration with coil springs and a transverse stabilizer bar, while the rear suspension employed an independent multi-link setup with air suspension and a transverse stabilizer bar. The air suspension system allowed for adjustable ride height and damping, further enhancing ride comfort. Braking duties were handled by ventilated discs on all four wheels, with larger discs at the front (355mm) compared to the rear (326mm). An anti-lock braking system (ABS) was standard, providing enhanced stopping power and stability.

Market Reception & Comparison

The Jaguar XJ Long 5.0 V8 Automatic was generally well-received by automotive critics. It was praised for its elegant design, luxurious interior, and refined driving experience. However, some critics noted that it lacked the outright performance of its supercharged counterparts and that its fuel economy was relatively poor compared to some competitors. Compared to the supercharged XJ models, the 5.0 V8 offered a more accessible price point and a more relaxed driving experience. Against rivals like the BMW 7 Series and Mercedes-Benz S-Class, the XJ Long offered a unique blend of British style and luxury, but often lagged behind in terms of technology and brand recognition.

Legacy

The Jaguar XJ Long 5.0 V8 Automatic, while not the highest-performance variant of the X351 generation, remains a desirable vehicle in the used car market. The 5.0-liter V8 engine is known for its reliability, although regular maintenance is essential. The ZF 8HP85 transmission is also highly regarded for its durability and smooth operation. The XJ Long’s aluminum construction helps to mitigate corrosion concerns, but potential buyers should still inspect the vehicle thoroughly for any signs of damage or neglect. Today, the XJ Long 5.0 V8 represents a compelling option for buyers seeking a luxurious and refined full-size sedan with a classic British character.