A rumor in May 2015 also suggested JLR would create an Ingenium-based turbocharged 3.0-liter inline-six and a 1.5-liter three-cylinder unit. According to Autocar, the engine bay in the XE, XF, and F-Pace can already fit the longer engine. The automaker isn't talking, though. "We can't comment on future product one way or another," company spokesperson Nathan Hoyt told Autoblog.
Jaguar built much of its performance legacy with straight-six-powered vehicles. While the C-Type and D-Type were winning races with the engine layout, practically every Jaguar production model used them as well. Today, straight-sixes are less common. BMW continues to use them, and Mercedes-Benz reportedly also plans to offer one soon.
While Autocar's report is still just a rumor, the move to an inline-six could be advantageous for JLR. For example, using an Ingenium-derived design could simplify manufacturing by allowing the company to build the powerplant in one factory alongside the 2.0-liter version. Returning to a design with such an important heritage for Jaguar would also make life easy for the brand's marketing team because it could link the new engine to past racing glory.