codriver

noun

co·​driv·​er ˌkō-ˈdrī-vər 

variants or co-driver

plural codrivers or co-drivers

: a driver who rides with and provides assistance to another driver (as during a road rally)

This was the very car British driver Stirling Moss took for a spin in the 1955 Mille Miglia. With his codriver consulting a long list of the race's every turn, Moss saw all of central Italy between dawn and dusk. Out of the corner of his eye, Moss followed his codriver's hand signals, enabling him to take tight corners in a blinding blur.

—Bruce Watson

codrive

ˌkō-ˈdrīv 

verb, transitive + intransitive

or co-drive

codrove or co-drove; codriven or co-driven; codriving or co-driving

Lucas Luhr qualified a Porsche 911 GT3 R … and will co-drive with Dirk Muller.

—The New York Times

Word History

First Known Use

1916, in the meaning defined above