The Lincoln Navigator SUV is starting to get very long in the tooth and will soon be facing some tough competition in the form of a redesigned 2014 Cadillac Escalade, due at the end of this year, while also having to deal with existing competition like the handsome new Mercedes-Benz GL Class.

A next-generation model is planned, and will likely be based once again on the underpinnings of the Ford Expedition.

Not much is known about the vehicle, but Motor Trend is reporting that the new Navigator SUV will feature an EcoBoost V-6 engine.

The information was confirmed by Lincoln global director Matt VanDyke.

However, it’s not clear if the new Navigator will continue to offer a V-8 as an option or if it will be a V-6-exclusive model. This is because VanDyke also confirmed that Lincoln was adopting an all-EcoBoost policy, and so far Ford doesn’t have an EcoBoost V-8 engine.

EcoBoost is the name applied to a range of fuel-efficient engines from the Ford Motor Company [NYSE:F], which benefit from technologies such as direct fuel injection, turbocharging and variable valve timing to help squeeze out more power from smaller displacements.

The most likely option for the new Navigator would be Ford’s 3.5-liter EcoBoost V-6. This engine churns out 365 horsepower and 410 pound-feet of torque, which is already significantly higher than the 310 horsepower and 365 pound-feet of torque of the current Navigator’s 5.4-liter V-8.

It’s not clear when we might see a new Navigator, but given the strong competition it can’t come soon enough. Lincoln sold just 622 Navigators last month, which was down 24.5 percent on the February figures from a year ago.