Cadillac CT5 CT5-V V-Series RWD 6DE79 1SF LGY MHS MY2025 US 2025 United States · Buying guide

Full specifications

Engine & powertrain3

Engine code	LGY, GM engine RPO (GM TechLink MY2025 chart)
Engine displacement	3.0 L (GM TechLink MY2025 chart)
Powertrain designation	LGY 3.0L twin-turbocharged V6; MHS ten-speed automatic; RWD (RWL)

CT5-V V-Series RWD 6DE79 1SF LGY MHS MY2025 US only. US MY2025 CT5 V-Series equipment group 1SF, model 6DE79 (4-door sedan); standard LGY/MHS verified in own-model order-guide Mechanical column D and MY2025 VIN p.12 series DR. Excludes optional F46. No sibling trim, other configuration, optional-engine, body, drive, year or market inference.

Capacities & service fluids4

Coolant capacity	12.1 L (12.8 US qt), approximately, for the entire engine cooling system (3.0L V6, rear-wheel drive)
Engine oil capacity	6.0 US qt (5.7 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-V V-Series RWD 6DE79 1SF LGY MHS MY2025 US only. US MY2025 CT5 V-Series equipment group 1SF, model 6DE79 (4-door sedan); standard LGY/MHS verified in own-model order-guide Mechanical column D and MY2025 VIN p.12 series DR. 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-V V-Series RWD 6DE79 1SF LGY MHS MY2025 US only. US MY2025 CT5 V-Series equipment group 1SF, model 6DE79 (4-door sedan); standard LGY/MHS verified in own-model order-guide Mechanical column D and MY2025 VIN p.12 series DR. Excludes optional F46. No sibling trim, other configuration, optional-engine, body, drive, year or market inference.