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Jaguar XJ (X351)

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Jaguar XJ (X351)
Overview
Manufacturer
ProductionSeptember 2009 – July 2019[1][2]
Assembly
Designer
Body and chassis
ClassFull-sizeluxury car(F)
Body style4-doorsaloon
LayoutFront-engine,rear-wheel-drive/all-wheel-drive
PlatformJLR D2a[5]
Powertrain
Engine
[6]
Transmission6-speedautomatic[6]
8-speed automatic (2013 onwards)
Dimensions
Wheelbase
  • XJ: 3,032 mm (119.4 in)
  • XJ-L: 3,157 mm (124.3 in)[6]
Length
  • XJ: 5,130 mm (202 in)
  • XJ-L: 5,255 mm (206.9 in)[6]
Width
  • 1,899 mm (74.8 in)
  • With mirrors: 2,110 mm (83 in)[6]
Height1,461 mm (57.5 in)
Kerb weightXJ:
  • Diesel: 1,796 kg (3,960 lb)
  • Petrol: 1,755 kg (3,869 lb)
  • Supercharged: 1,892 kg (4,171 lb)
XJ-L:
  • Diesel: 1,813 kg (3,997 lb)
  • Petrol: 1,773 kg (3,909 lb)
  • Supercharged: 1,915 kg (4,222 lb)[6]
Chronology
PredecessorJaguar XJ (X350)/Jaguar XJ (X358)

TheJaguar XJ (X351)is asaloon carbuilt by British manufacturerJaguar Cars,later known asJaguar Land Rover,from 2010 to 2019. It is the fourth-generation of theJaguar XJmodel. Referred to internally within Jaguar as the X351, it was announced in 2009 before going on sale in 2010, and combines revised styling with underpinnings of the previousJaguar X350generation.[7][8]The model was discontinued in 2019. It is the final generation of the XJ, after theelectric Jaguar XJwas cancelled in February 2021.[9]

Overview

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Jaguar invitedJay Lenoto unveil the new XJ during the launch at theSaatchi Galleryin London on 9 July 2009.[10]The event was broadcast live on the Jaguar website. The US model was unveiled at the 2009Pebble Beach Concours d'Elegance.[11]

Production of the car was due to begin in September 2009, with first deliveries being made in early 2010.[12]Production later began in 2010, with the car arriving in dealer showrooms in May 2010.[13][14]Production was initially carried out only at theCastle Bromwich Assemblyplant inBirmingham,England.[15]From 2014, assembly fromcomplete knockdown kits,or CKD, of the XJ commenced at Jaguar Land Rover's facility inPune,India.[16]

Design

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The XJ was designed at Jaguar Land Rover'sWhitley plantin Coventry by a team led by design directorIan Callum.[17]Design work began in 2005, with final design approval taking place in November 2006 and the design being frozen in the first half of 2008.[18][19] The new design is a complete departure from any earlier XJ model; mechanically, the car is a development of its predecessor.[20]

Models

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Standard wheelbase XJR model
Long wheelbase XJ (X351) model
Interior of the XJR unveiled at the New York Auto Show

In addition to the standard version with a 3,035 mm (119.5 in) wheelbase, a long-wheelbase version was available with a 3,160 mm (124 in) wheelbase.[10]At the 2010 Moscow Motor Show, a high security version of the car called the XJ Sentinel was introduced.[21][22]This is an armoured version of Long Wheelbase XJ with B7-level ballistic protection as well as providing protection against 15 kg TNT or equivalent explosive. It has the 5.0 L supercharged V8 engine shared with the XJ Supersport having a power output of 510 PS (375 kW) and 19-inch wheels with Dunlop Self Supporting Technologyrun-flat tyres.[23]Unlike other full-size flagship executive cars, the long-wheelbase variant was designed first and was expected to make up 67 percent of sales in the US market.[24]

Models Luxury Premium Luxury Portfolio Supersport Sentinel
Engines 3.0 L diesel V6 3.0 L diesel V6, 5.0 L V8 3.0 L diesel V6, 5.0 L V8, 5.0 L supercharged V8 3.0 L diesel V6, 5.0 L supercharged V8 5.0 L supercharged V8
Wheels (standard) Meru 18-inch alloy Aleutian 19-inch alloy Kasuga 20-inch alloy Mataiva 20-inch alloy Aleutian 19-inch alloy

Engines

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The engine used by the X351 are enlarged and upgraded versions of the previously usedV8petrol andV6diesel engines.

Model Type (displacement, bore × stroke) Power and torque (at rpm) Acceleration 0–100 km/h (62 mph) (seconds) Top speed[25]
3.0-litre twin-turbocharged V6 DieselAJ-V6DGEN III 2,993 cc (2.993 L; 182.6 cu in), 84 mm × 90 mm (3.3 in × 3.5 in) 275 PS (202 kW; 271 hp) at 4,000, 600 N⋅m (443 lbf⋅ft) at 2,000 6.4 250 km/h (155 mph)
3.0-litre Supercharged V6 PetrolAJ126 2,995 cc (2.995 L; 182.8 cu in), 84.5 mm × 89 mm (3.33 in × 3.50 in) 340 PS (250 kW; 340 hp) at 6,500, 450 N⋅m (330 lbf⋅ft) at 3,500-5,000 5.9 250 km/h (155 mph)
5.0-litre V8 PetrolAJ-V8 GEN III 5,000 cc (5.0 L; 310 cu in), 92.5 mm × 93 mm (3.64 in × 3.66 in) 385 PS (283 kW; 380 hp) at 6,500, 515 N⋅m (380 lbf⋅ft) at 3,500 5.7 250 km/h (155 mph)
5.0-litre Supercharged V8 Petrol AJ-V8 GEN III 5,000 cc (5.0 L; 310 cu in), 92.5 mm × 93 mm (3.64 in × 3.66 in) 470 PS (346 kW; 464 hp) at 6,000–6,500, 575 N⋅m (424 lbf⋅ft) at 2,500–5,500 5.2 250 km/h (155 mph)
5.0-litre Supercharged V8 Petrol AJ-V8 GEN III 5,000 cc (5.0 L; 310 cu in) V8 supercharged, 92.5 mm × 93 mm (3.64 in × 3.66 in) 510 PS (375 kW; 503 hp) at 6,000–6,500, 625 N⋅m (461 lbf⋅ft) at 2,500–5,500 4.9 250 km/h (155 mph) [280 km/h (174 mph) for the XJR]
5.0-litre Supercharged V8 Petrol AJ-V8 GEN III 5,000 cc (5.0 L; 310 cu in) V8 supercharged, 92.5 mm × 93 mm (3.64 in × 3.66 in) 550 PS (405 kW; 542 hp) at 6,000–6,500, 625 N⋅m (461 lbf⋅ft) at 2,500–5,500 4.6 280 km/h (174 mph)

Transmission and top speed

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All 2010 models of the Jaguar XJ include standard six-speedautomatic transmissionwith Jaguar Sequential Shift carried over from the X350, the main change being steering wheel shift paddles rather than theJ-gate gear selector. The XJ has an electronically limited top speed of 250 km/h (155 mph); the limiter has been raised to 280 km/h (174 mph) for theXJRmodel.[26][27]An eight speed automatic transmission was introduced from 2013 onwards.[28]

Chassis

[edit]

The XJ features a lightweightaluminiumfloorpan and body (with 50% recycled material content) based on the X350 chassis and retaining a proportion of the earlier floor pan. The biggest change is reversion to steel coil springs for the front suspension, retainingair suspensionfor the rear only.Continuously variable dampingis electronically controlled as before but with driver selectable modes.[29]The aluminium alloy uni-body makes the XJ L among the lightest of the full-size executive saloons despite its exterior proportions, weighing in at 1,874 kg (4,131 lb), which is 111 kg (245 lb) lighter than the mid-size/executiveBMW 550i.[24]

Equipment

[edit]

Driver information and entertainment is provided by aBowers & Wilkins1,200-watt, 20-speaker Dolby 7.1 surround-sound system,[12]along with a bi-directionaltouch screendisplay on which the driver can only see the vehicle functions andsatellite navigationdata; a front passenger can simultaneously view a DVD movie or a television transmission.[29]Standard equipment levels on the United States-spec XJ L with the base engine includes a panoramic dual-pane moonroof,lane-departure warning,navigation, quad-zone climate control, and power sunshades, which is considered to be generous at this price point compared to other flagship executive saloons.[24]

Fuel economy and emissions

[edit]

The diesel engine version had a fuel economy of better than 40 miles per imperial gallon (7.1 L/100 km; 33 mpg‑US) and a CO2emission rating of 184g/km.[4]

Special uses

[edit]

The car has been used byBritish prime ministers.Dating back to theJaguar XJ (Series III),various versions of the XJ were used byMargaret Thatcher,John Major,Tony Blair,andGordon Brown.[30]On 11 May 2010,David Camerontook delivery of the dark grey car No. 10 Jaguar XJ Sentinel as hisprime ministerial car.[31]In 2011, Cameron took the delivery of another XJ Sentinel featuring bomb proof doors,bullet proof glass,and armoured plating beneath the floor of the car, respectively replacing the previous XJ Sentinel.[32]The car was used for transportingTheresa May,[33][34]and was also used byBoris Johnson.[35]Under Johnson, the XJ was replaced for the first time since 1979 by theRange RoverAbio Sentinel as the prime ministerial car in 2019.[36]

Model year changes

[edit]

2011

[edit]

New options include:[37]

  • New Rear Seat Comfort package, which incorporates electric recline, lumbar adjustment and massage functions to reinforce the ultimate executive limousine experience.
  • Executive Pack option is added to XJL Portfolio model, which includes provision of fold-down laptop trays and an electric rear sunblind, upgraded carpeting, combination wood and leather steering wheel, gloss wood veneer choices and chrome mirror housings.
  • Sport and Speed Pack option, which includes a new front splitter and rear spoiler, suede headliner, sport seats with contrasting stitching, bright metal pedals, either piano black or carbon-fiber interior trim, gloss black exterior trim, red brake calipers, and Venom 20-inch wheel design. The speed governor is relaxed from 250 km/h (155 mph) to 280 km/h (174 mph).
  • Illumination Package (standard on Supersport model) is available as option of other XJ models.
  • 3.0-litre petrol V6 engine for selected markets, launched in China.

XJ 5.0 V8 Portfolio Prestige

[edit]

The XJ V8 Portfolio Prestige is a special model developed for the Hong Kong market. Based on the XJ L Portfolio with a 5.0-litre V8 engine, it includes the XJ rear seat comfort pack and gloss oak interior veneer as standard equipment.[38]

XJ Ultimate

[edit]

The XJ Ultimate is a special model introduced in 2011. Available only in the long wheelbase configuration, the car was developed by the Jaguar Land Rover's specialist Engineered To Order (ETO) division and was unveiled at the 2012Beijing Auto Show.Mechanical equipment for the US model includes a 5.0 L supercharged V8 engine rated at 510 PS (375 kW) and an eight-speed automatic transmission. The XJ went on sale in late 2012 as the 2013 model year vehicle.[39]In India, the XJ Ultimate is available with a 5.0-litre V8 petrol engine that costs18.8 million(US$230,000) or with a 3.0-litre V6turbochargeddiesel engine that costs17.8 million(US$210,000).[40]

2012

[edit]

Changes include:[41][42]

  • Introduction of a 3.0-litre supercharged V6 engine
  • Eight-speed automatic transmission for all models.
  • Jaguar's IntelligentStop/Start systemextended to all V6 and V8 petrol and all diesel engines.
  • The supercharged V8 petrol engine has fuel economy gains of up to 11% with emissions reductions of more than 8%, while the naturally-aspirated V8 sees economy improvements of up to 8% with emissions down by more than 6%.
  • Optional sound systems developed by British ultra-premium specialist Meridian. Available in two power outputs — 380 W and 825 W — both featuring multiple channel amplifiers anddigital signal processingsoftware powering an array of loudspeakers.
  • Infotainment system updates enhance the audio and navigation interfaces and usability.
  • Suspension enhancements to the XJ further optimise passenger comfort.

XJR (2013–2019)

[edit]
Rear view of the XJR575 in 2018

Introduced in 2013, the XJR is a high-performance variant of the XJ. Available in standard and long wheelbase configurations, it includes a 5.0-litre supercharged V8 engine rated at 550 PS (405 kW; 542 hp) and 680 N⋅m (502 lb⋅ft), an increased top speed to 280 km/h (174 mph), eight-speed automatic transmission with a bespoke tuning for the XJR, a new front splitter and aerodynamic sill section combined with an additional rear spoiler and uniqueRbonnet louvres,Electronic Active DifferentialandDynamic Stability Controlsystems calibrated to enhance handling characteristics, new 20-inch Farallon forged alloy wheels with bespokePirellilow-profile tyres, semi-aniline leather, a choice of veneers, and contrasting stitching on the seats.[43]

The XJR was initially unveiled at 2013New York Auto Show,followed by the 2013Goodwood Festival of Speed.[44]The US model went on sale as 2014 model year vehicle.[45]

Transmissions

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All models includeZF 8HPeight-speed automatic transmission.[46]

2014

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Changes include optional IntelligentAll-Wheel DriveSystem for 3.0-litre V6 petrol engine models, addition of long-wheelbase models, power output of the XJR model increased to 550 PS (405 kW), Intelligent Stop/Start system for all engines and increased headroom for long-wheelbase models (except US model).[47]

2015

[edit]
The 2015 facelifted XJL Autobiography

The XJ received a facelift in 2015. Changes include LED front and rear lights, rear J-Blade lights, a new grille, and a new InControl Touch Pro infotainment system, new driver assistance technology and a new audio system.[48]

Discontinuation

[edit]

On 30 May 2019,Autocarreported that Jaguar would discontinue the X351 in July 2019, partly to make way for a new flagship XJelectric carplanned to be built at Castle Bromwich.[49]The article mentioned that, despite its status, it was Jaguar's least popular model, selling 301 in September 2018 compared with 4,492Jaguar F-PaceSUVs and 2,252Jaguar XEsaloons.[50]

In February 2021, it was announced that theelectric XJsuccessor was cancelled for the present.[51]The company said: "Following a thorough technology review against the exponential change in the automotive industry, we concluded that the planned XJ replacement does not fit with our vision for a reimaged Jaguar brand."[52]As reported by Richard Porter ofSniff Petrolin August 2022, the prototypes of the cancelled successor still existed and were SORN,[53]and subsequently found out other prototypes existed and were still being tested on the road.[54]

In a September 2022 retrospective, James Howe wrote: "Fans of the XJ may regard the X351 as too far removed from the familiar flowing lines of its seven predecessors, but even 12 years after it was launched at the Saatchi Gallery in London, and two years since production ceased, it still looks modern and unmistakably Jaguar."[2]

References

[edit]
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  3. ^IST (23 May 2014)."Locally Assembled Jaguar XJ Makes India Debut; Price, Features Details".International Business Times.India Edition.Retrieved28 June2015.
  4. ^abGlancey, Jonathan (9 July 2009)."Jaguar defies recession to launch lavish new XJ".The Guardian.London.Retrieved10 July2009.
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  54. ^Richard Porter [@sniffpetrol] (5 August 2022)."And when you do a bit of rooting around, you'll find three very similar-sounding cars on similar regs are also taxed. So there are, potentially, at least four supposedly dead XJ EV prototypes on the road. 12/x"(Tweet).Retrieved5 April2023– viaTwitter.

Further reading

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