Cadillac CT5 CT5 Sport RWD 6DD79 1SE LSY MQ2 MY2025 US 2025 United States · Buying guide

Full specifications

Engine & powertrain3

Engine code	LSY, GM engine RPO (GM TechLink MY2025 chart)
Engine displacement	2.0 L (GM TechLink MY2025 chart)
Powertrain designation	LSY 2.0L turbocharged I4; MQ2 ten-speed automatic; RWD (RWL)

CT5 Sport RWD 6DD79 1SE LSY MQ2 MY2025 US only. US MY2025 CT5 Sport equipment group 1SE, model 6DD79 (4-door sedan); standard LSY/MQ2 verified in own-model order-guide Mechanical column E and MY2025 VIN p.12 series DP. Excludes optional F46. No sibling trim, other configuration, optional-engine, body, drive, year or market inference.

Capacities & service fluids4

Coolant capacity	10.4 L (11.0 US qt), approximately, for the entire engine cooling system (2.0L L4)
Engine oil capacity	5.3 US qt (5.0 L) with filter (GM TechLink MY2025 chart)
Fuel tank capacity	66.0 L (17.5 US gal), approximately
Transmission fluid	DEXRON ULV automatic transmission fluid

CT5 Sport RWD 6DD79 1SE LSY MQ2 MY2025 US only. US MY2025 CT5 Sport equipment group 1SE, model 6DD79 (4-door sedan); standard LSY/MQ2 verified in own-model order-guide Mechanical column E and MY2025 VIN p.12 series DP. Excludes optional F46. No sibling trim, other configuration, optional-engine, body, drive, year or market inference.

Battery & charging2

12V battery	12-volt Absorbed Glass Mat (AGM) battery; refer to the original battery label replacement number
Smart-key battery	CR2450 lithium or equivalent battery; insert positive side toward the back cover

CT5 Sport RWD 6DD79 1SE LSY MQ2 MY2025 US only. US MY2025 CT5 Sport equipment group 1SE, model 6DD79 (4-door sedan); standard LSY/MQ2 verified in own-model order-guide Mechanical column E and MY2025 VIN p.12 series DP. Excludes optional F46. No sibling trim, other configuration, optional-engine, body, drive, year or market inference.