See also:

Improved 2.5 four-cylinder dCi
The existing 2.5 dCi four cylinder engine hasn't been forgotten, however, and significant improvements will cement its position as the most popular engine in the range with improvements to both ov ...

Engine serial number
MR20DE QR25DE The number is stamped on the engine as shown. ...

Size & Maneuverability
The Frontier has grown over the years with various redesigns, a trend that's affected both trucks and cars. That said, it's still pretty easy to drive the Frontier in the city. Even on Chicago's ...