This year looks like the last season for Dodge in NASCAR.
A person briefed on the matter said that Dodge is pulling out of its sponsorship at the end of the 2012 season.
Chrysler, which owns the Dodge brand, has scheduled a conference call for Tuesday afternoon to announce the withdrawal.
The reason for the Dodge's withdrawal is not yet known.
Among the four manufacturers in the top racing series, Dodge now stands tied with Ford in last place.
Chevrolet is in first, followed by Toyota.
Dodge's long-term future in NASCAR has been subject of speculation since Penske Racing announced it was moving to Ford next season.