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For an overview of all Jaguar XJ models, see Jaguar XJ.

Jaguar XJ (X351)
Overview
Manufacturer	Jaguar Cars (2010–2012) Jaguar Land Rover (2013–2019)
Production	March 2010 – July 2019 a. 122,330 examples
Assembly	England: Castle Bromwich, Birmingham (Castle Bromwich Assembly) India: Pune
Designer	Ian Callum (design director: 2005–2008) Giles Taylor (2006, 2008)
Body and chassis
Class	Full-size luxury car
Body style	4-door saloon
Layout	Front-engine, rear-wheel-drive / all-wheel-drive
Platform	JLR D2a
Powertrain
Engine	Petrol: 3.0 L supercharged AJ V6 5.0 L AJ Gen III V8 5.0 L AJ Gen III supercharged V8 Diesel: 3.0 L Ford AJD twin-turbocharged V6
Transmission	6-speed automatic (2010–2013) 8-speed automatic (2013–2019)
Dimensions
Wheelbase	XJ: 3,032 mm (119.4 in) XJ-L: 3,157 mm (124.3 in)
Length	XJ: 5,130 mm (202 in) XJ-L: 5,255 mm (206.9 in)
Width	1,899 mm (74.8 in) (mirrors open) 2,110 mm (83 in) (mirrors closed)
Height	1,461 mm (57.5 in)
Kerb weight	1,773–1,915 kg (3,909–4,222 lb)
Chronology
Predecessor	Jaguar XJ (X358)

The Jaguar XJ (X351) is the fourth generation of the Jaguar XJ, a series of full-size luxury saloon cars produced by the automaker Jaguar Cars. Produced between 2010 and 2019, it marked Jaguar's departure from the conservative styling of previous XJs.

The development of the X351 began in 2005, and the design approval process took place in November 2006. The designers Ian Callum and Matthew Beaven led the styling team of the XJ, which included various other prominent stylers such as Giles Taylor, Adam Hatton, Mark Phillips, Nicholas Finney and Kim Challinor. Jaguar tasked the designers with producing a new design incorporating most of the underpinnings from XJ (X350). But despite the X350 serving as its basis, the X351 had to include a style that fit in with the newly-introduced but unrelated XK (X150) and the XF (X250), which were already successful within the market sector. Beaven claimed that the design team had developed a series of vehicles ranging from a sports saloon to a large luxury car. The team finalised the design in 2008, and the XJ debuted in July 2009.

The official series manufacture began in March 2010 at the Castle Bromwich Assembly facility in Birmingham, England, and sales started in May. Initially, XJs were produced only at the English facility, but in 2014, the assembly of complete knockdown kits began at Jaguar's facility in Pune, India. In 2015, Jaguar introduced a facelift for the X351, with its most prominent change being the inclusion of Jaguar's "J-Blade" headlamps. The production of the X351 ended in July 2019, after Jaguar had produced over 122,330 examples. An electric version of the X351 was to be launched in 2020, but plans were cancelled in 2021 due to the economic infeasibility.

Development

The rear view of the XJ

The development and design work of the fourth generation of the Jaguar XJ—codenamed the "X351"—began in 2005.