Cadillac has won the most IMSA manufacturers championships, with 4.
Most successful:
- Cadillac — 4
- Acura — 3
- Chevrolet — 3
- Porsche — 2
Based on IMSA manufacturers champions 2014–2025.
Endurance & GT
Which team has won the most IMSA titles?
Cadillac leads with 4 IMSA manufacturers titles.
Sources
- Paddock curated championship records
- Wikipedia — IMSA champions
- IMSA official site