Below is a list of light bulb types used in 2017- FORD FIESTA lighting system, covering van and hatchback vehicles.
Headlight bulb: low beam - H7 / high beam - H1 or H15
Parking light bulb: H15
Fog light bulb: H8 or H11
Front indicator/turn signal bulb: PY21W
Daytime running light bulb: H15
Rear indicator/turn signal bulb: PY21W
Tail light bulb: P21/5W
Brake light bulb: P21/5W
Back-up light bulb: W16W
Rear fog light bulb: P21W
Light bulb sizes for other FORD FIESTA generations: FIESTA (5th GEN) / FIESTA (6th GEN)