The F-Type may be getting more attention lately, but the Jaguar XK has soldiered on for years as the brand's mainstay performance car.

Its time in showrooms may be coming to an end, though.

Autocar reports that XK production will end this summer, as Jaguar attempts to diversify its lineup with higher-volume models like the XE, a BMW 3 Series-fighting sedan announced at this week's Geneva Motor Show.

A drop in sales since the launch of the F-Type hasn't helped the XK's case. Jaguar reportedly sold less than 4,000 XKs in 2013, with sales taking a nose dive after the launch of the smaller sports car. The upcoming F-Type coupe is expected to steal even more sales from its big brother.

While the XK is a larger 2+2, it ended up in the crosshairs of the F-Type because Jaguar promoted it as both a luxurious GT and a sports car. While its natural rivals may be the cushy BMW 6 Series and Mercedes-Benz SL-Class, Jag has also tried to push the XK into hardcore performance territory, as evidenced by the XKR-S GT.

A replacement reportedly isn't out of the question, but it would definitely lose this split personality. With the F-Type positioned as Jaguar's true sports car, a new XK would most likely emphasize luxury as well as performance.

According to Autocar, Jaguar has been considering a more mature XK for some time. Back in 2012, design director Ian Callum said a new version of the car could grow in size to suit a different market segment.

Right now, though, it seems what Jaguar buyers want most is the F-Type, and it's hard to argue with that.

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