Challenge Darfield is a petrol station at 33 South Terrace in Darfield, in the Selwyn district on the Canterbury Plains. Challenge stations are independently owned, and the brand says they offer a full motoring service beyond fuel and shop products. Regular customers can join My Challenge, which gives a minimum discount of 6 cents off each litre every day, as at 2026, and one point for every $1 spent, redeemable in store. Farmlands shareholders get 12 cents off each litre with their Farmlands Card, as at 2026.