It is looking more and more like a 2018 Ford F-150 diesel will be hitting the market next year. A video and now photos are further pushing this speculation and it almost seems certain to happen.

The spy photos on Truck Trend clearly show an engine bay that doesn’t appear to look like any gasoline engine I have ever seen. While I don’t see a tell-tale second battery, the additional photos of the diesel placard, diesel fuel inlet and large exhaust pipe all seem to indicate Ford is at the very least testing the idea.

Truck Trend furthers speculates the engine is likely going to come from the 3.0L “Lion” V6 from Range Rover and Range Rover Sport Td6 models. This engine produces 254 HP and 440 lb-ft of torque. If Ford mated this engine, which gets 25 percent fuel economy out of the box due to it being a diesel, to its new 10-speed transmission, we could very well have our first 30 MPG highway pickup.

Hitting the 30 MPG highway mark has been a target for truck makers for the last several years after the EPA announced new CAFE rules stating truck fuel economy had to improve across the board. Ford has done the most to hit this mark introducing the first mass-market application of aluminum body panels, turbo-charged engines and 10-speed transmissions. Through their product development, they have focused on dropping weight, improving aerodynamics and building more fuel efficient engines without sacrificing capability.

If any automaker is going to hit the 30 MPG mark, Ford will likely do it. Yet, the big question remains: will consumers buy it?