The full field for the championship, which is celebrating its 60th anniversary this year, was revealed at the annual pre-season launch day and test at Donington Park.
The entry list includes five series champions: Sutton, his BMR Subaru team-mate Jason Plato, Honda’s Matt Neal and WSR BMW racers Colin Turkington and Andrew Jordan.
BTCC boss Alan Gow said: “Last year, we saw the incredible ride-and-rise of eventual champion Sutton, and he is just one of an ever-growing number of emerging talents in the BTCC.
"The mix of young guns taking on the established stars has been one of the fascinating stories in recent years, and that looks set to continue in 2018.”
The season begins at Kent's Brands Hatch circuit on April 8.
BTCC entry list 2018
BMR Subaru Levorg GT: Ash Sutton, Jason Plato, Josh Price
WSR BMW 125i M Sport: Colin Turkington, Rob Collard, Andrew Jordan
Team Dynamics Honda Civic Type R: Matt Neal, Dan Cammish
Motorbase Performance Ford Focus RS: Tom Chilton, Sam Tordoff, James Cole
Speedworks Motorsport Toyota Avensis: Tom Ingram
Power Maxed Vauxhall Astra: Josh Cook, Senna Proctor
Team Parker Racing BMW 125i M Sport: Stephen Jelley
Ciceley Racing Mercedes-Benz A-Class: Adam Morgan, Tom Oliphant
Laser Tools Racing Mercedes-Benz A-Class: Aiden Moffatt
Eurotech Honda Civic Type R: Jack Goff, Brett Smith, Matt Simpson
HMS Alfa Romeo Giulietta: Rob Austin
BTC Norlin Honda Civic Type R: James Nash, Chris Smiley
Team Hard Volkswagen CC: Jake Hill, Mike Bushell, Michael Caine, Bobby Thompson
AmD Tuning Audi S3: Ollie Jackson, Sam Smeldt