Infiniti QX50

The Infiniti QX50, marketed also until 2013 as the Infiniti EX (North America) and Nissan Skyline Crossover (Japanese Domestic Market|JDM), is a front- or all-wheel drive, five passenger, five-door compact luxury crossover SUV, manufactured and marketed by Infiniti, Nissan's luxury division over three generations: one generation as the EX followed by two QX50 generations.

The EX (MY 2008-2013) was the first production automobile equipped a surround-view camera, marketed as Around View Monitor.

The first generation QX50 was a minor model update of the EX with its nameplate changed to QX50 to align with the marque's new Q and QX nomenclature introduced for model year 2013 (China) and model year 2015 (United States). The second-generation QX50 entered production in November 2017 as a 2019 model.

Infiniti EX Concept (2007)
Infiniti presented a preliminary concept for the EX at the 2007 New York Auto Show, notable for its surround-view camera (marketed as Around View Monitor), lane departure system, V6 engine, 5-speed automatic transmission, all-wheel-drive, double-arch grille, large L-shaped headlights with adaptive front lighting system (AFS), integrated fog lights, LED taillights and an "arch" profile design.

EX35 (2007-2013)
Infiniti presented the EX35 production model at the 2007 Pebble Beach Concours d'Elegance, followed by Jamsil Olympic Stadium in Seoul.

 North American model  of the EX35 went on sale in December 2007 for model year 2008 &mdash; in rear- or all-wheel drive, using the Nissan FM platform. The EX35 was offered with a 297 hp 3.5 L V6 (VQ35HR) until it was rebadged in 2013 as EX37 with a 325 hp 3.7 L V6 (VQ37VHR). For the 2014 model year, Infiniti again rebadged all of its models, renaming the EX37 as QX50.

South Korean model went on sale in 2008-01-24 as 2008 model year vehicle.

EX37
 European market  The Infiniti EX is sold as the EX37 in the European market. It debuted in Fall 2008. Japanese versions are badged as the Nissan Skyline Crossover.

EX30d
A new 3.0-liter V6 (V9X) diesel engine became available on the 2010 EX, FX and M models. The V6 engine delivers 240 hp and a peak torque of 550 Nm. The engine comes with a seven-speed automatic transmission.

The brand entered the European market with a new 3.0-liter V6 diesel. The engine was the first Diesel in the Infiniti brand's 20-year history. The engine produces 235 hp and 405 Nm of torque.

European model went on sale as 2010 model year vehicle.

EX25
The VQ25HR V6 engine delivers 218 hp and peak torque of 253 Nm. The engine is mated to a seven-speed automatic transmission. It was launched at the 2010 Beijing International Automotive Exhibition. The EX25 Crossover is currently marketed only in China, Malaysia, Russia and Ukraine.

Transmissions
Transmissions include manual shift mode that includes the option of sequentially selected manual gearshifts and Downshift Rev Matching (DRM). U.S. models include a choice of RWD or ATTESA E-TS AWD. Models sold in Canada, Europe include ATTESA E-TS AWD as standard.

The Infiniti EX35 line has a 0-60 mph time of 5.8 - 6.2 seconds. The quarter mile is 14.6 seconds at 98 mi/h, and top speed is electronically limited to 144 mi/h. 70 mi/h - 0 braking is a 166 ft. Roadholding is .83g.

Features
The EX was the first production automobile to offer a surround-view camera, marketed as Around View Monitor. The cameras are located at the front, back and sides of the vehicle and feed images to an image processing unit; those individual inputs are analyzed, synthesized to offer a synthetic, but positionally accurate, somewhat lifelike top-down view of the car and its surroundings.

The EX was one of the first production automobiles to feature "Scratch Shield," a "self-healing clearcoat paint. The paint self-repairs fine scratches, such as fingernail scratches under door handles, restoring the EX's surface close to the original state. The process, which takes anywhere from one day to one week (depending on the surrounding temperature and the depth of the scratch), is accomplished through the use of an elastic resin. It is combined with a conventional clearcoat to increase the paint's flexibility and strength by raising the resin density."

The EX was the second Infiniti production vehicle, following the 2008 Infiniti M series, to offer the Lane Departure Prevention (LDP) system. This utilizes the electronic stability control system to help assist the driver in maintaining lane position by applying gentle brake pressure on each wheel individually to generate intended movement. It sounds an alert and nudges the vehicle in the correct direction when lane departure is detected. It also applies braking actuation to bring vehicle back in the lane.

QX50 (2013)
The vehicle was unveiled in the 2013 Nanjing Auto Show.

 Middle East models  went on sale as 2014 model year vehicle. Early models include VQ37VHR 3.7-liter V6 (326PS) engine with all wheel drive, 7-speed automatic transmission with manual shift mode, DS mode with Downshift Rev Matching (DRM), and Adaptive Shift Control.

US models went on sale as 2014 model year vehicles. Early models included QX50, QX50 AWD, QX50 Journey and QX50 AWD Journey.

QX50L (2015)
The China model was set to go on sale in 2015.

Production
Production of the Chinese models of QX50L at Xiangyang plant in Hubei Province was set to begin in 2014.

Marketing
Infiniti QX50L was used as the actors' official passenger vehicle for the Where Are We Going? Dad (爸爸去哪儿) television series.

QX50 (2015)
Changes include overall length increased by 80 mm, a redesigned grille and front bumper assembly that incorporate LED daylight running lights, optional automatically opened and closed tailgate hatch, optional full panoramic glass roof.

The vehicle was unveiled in the 2014 Guangzhou motor show, followed by the 2015 New York Auto Show.

Delivery of China model began in February 2015.

US models went on sale as 2016 model year vehicle. Early models included 3.7, 3.7 AWD.

Second generation (J55; 2019)


The production version of the second-generation QX50 was presented at the 2017 LA Auto Show as a 2019 model with a turbocharged 2.0 L KR20DDET gasoline engine using Nissan's VC-T variable compression ratio system.

Production of the QX50 began in November 2017 at COMPAS, a Nissan and Daimler AG's joint plant in Aguascalientes, Mexico.

QX55
Introduced in the first quarter of 2021 for the 2022 model year, the QX55 is a "coupé SUV" version of the QX50 with a more sloped roof design. Infiniti intends it to be the spiritual successor to the FX.

QX Sport Inspiration Concept (2016)
It included 21-inch wheels, black and white interior upholstery.

The vehicle was unveiled in the 2016 Beijing Motor Show, followed by the 2016 Paris Motor Show (with gray body color, 22-inch wheels in bronze, brown leather interior upholstery, 2.0-liter inline-four variable compression engine with compression ratio between 8:1 and 14:1), 2016 Los Angeles Auto Show (with black and white interior upholstery).

QX50 Concept (2017)
It included a 2.0-liter inline-four variable compression engine with compression ratio between 8:1 and 14:1, front-drive platform.

The vehicle was unveiled in the 2017 North American International Auto Show.

KR20DDT engine NHTSA investigation
On December 13, 2023, the NHTSA opened an investigation into customer complaints of engine failure in the Nissan's KR15DDT and KR20DDET engines, the latter being used in the J55 QX50. The complaints allege engine failure, loss of motive power, engine knock, or noise and/or metal chunks and shavings being found in the oil pan of vehicles with these engines. The cause appears to be seizures and damages to the main bearings and L-links. Nissan stated that they are attempting to address these failures by changing their manufacturing process.

QX50
The 2020 QX50 was tested by the Insurance Institute for Highway Safety.

QX55
The 2022 QX55 was tested by the Insurance Institute for Highway Safety.