Teemu Suninen will compete in eight World Rally Championship rounds in M-Sport's third Fiesta.
Suninen and co-driver Mikko Markkula will join the team at Rally Sweden, Rally Mexico, Rally de Portugal, Rally Italia Sardegna, Rally Finland, the Rally of Turkey, Wales Rally GB and Rally de España.
The Finn, who scored four stage wins in an M-Sport Ford Fiesta WRC across Poland and Finland last year, will also contest two rounds in WRC 2 this year, namely Rallye Monte-Carlo and Rallye Deutschland.
“We need to ensure that we make the most of this opportunity, and that is exactly what we plan to do,” said Suninen.
“I'm really looking forward to getting back behind the wheel of a top-specification world rally car and aim to learn as much as I can.”
M-Sport Team Principal Malcolm Wilson said that Suninen's 2017 performances had raised expectations for this year.
“There is no doubting Teemu's potential and I am sure that he will prove himself a very valuable member of our team this year,” commented Wilson.
“More than a few heads were turned when he got behind the wheel of the Ford Fiesta WRC for the first time last year.
“To secure a stage win on your debut outing (Poland) is one thing, but to be challenging for a podium on your second (Finland) is quite another.
“There is no denying that Teemu is a very talented young driver, and a future rally winner.
“With eight rallies this year he'll get the vital experience needed to develop his career at this level and I would not be at all be surprised if we saw him challenging for a podium or two.”
Both would be able to be registered to score manufacturers' championship points for the team in their respective outings.
Monte-Carlo kicks off the season in a fortnight's time (January 25-28).