The 36-year-old will race in all 12 rounds with his own independent outfit, which is backed by energy drink company Loco. He'll be the series' sole British driver.
Wilks's Polo RX was driven by Johan Kristoffersson to second place in the championship last year. It produces 552bhp from its 2.0-litre turbocharged petrol engine and can accelerate from 0-62mph in about 2.0sec.
"The Polo we’re using pretty much got into every final last year, so it's more than capable," Durham-born Wilks told Autocar. "This puts a bit of pressure on me, but this option also means we can do our own thing [unlike manufacturer-backed teams]."
The Loco-backed car will be one of two Polo variants running in 2017. The other is a new version being used by three-time champ Petter Solberg and his PSRX team, which benefits from technology first developed for the stillborn Polo WRC car.