I have a Ranger 3.0 ecoblue diesel 2024 here in the uk. I have drive a couple others before I purchased it and all seem to do the same thing when you first start the vehicle the Power is restricted for a little while which might be a safety precaution to protect the engine from cold I understand...
I have recently purchased a Ranger 3.0 diesel 240 and have had to borrow a demo vehicle while they fix some minor problem with the paint. Mine has done 1000 miles and the demo 5000. The demo vehicle is massively more responsive than mine. The demo is the same engine and according to the dealer...