2026 Cadillac CT4 - Electric Vehicle Guide
The 2026 Cadillac CT4 belongs to a Cadillac CT4 lineup that Know Your Ride tracks across 3 model years, from 2022 to 2026. It is an all-electric vehicle, so it skips the oil changes, spark plugs and exhaust-system service of a combustion CT4 entirely. It is configured as rear-wheel drive with an automatic (s10). This 2026 car is the most recent Cadillac CT4 model year on record.
The high-voltage battery is covered for 8 years or 100,000 miles, separate from the bumper-to-bumper warranty. Routine upkeep centers on tire rotation, DOT 4 brake fluid, Dex-Cool battery/cabin coolant, cabin air filters and brake service rather than engine oil. Know Your Ride lists 20 scheduled maintenance items for this vehicle, the earliest interval falling at 5,000 miles. Documented torque values include lug nut 100 ft-lb.
Its overall reliability signal is rated "Excellent" based on aggregated complaint and crash data.
Estimated annual charging cost runs near $2,500.
Quick Specs
| Battery warranty | 8 yr / 100,000 mi |
| Est. annual charging | $2,500 |
| Tire size | 225/45R18 |
| Coolant | Dex-Cool |
| Technical service bulletins | 52 |
Common Trouble Codes
- P0300 - Random/Multiple Cylinder Misfire Detected
- P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
- P0171 - System too Lean (Bank 1)
- P0128 - Insufficient Coolant Temperature for Stable Operation
- P0442 - Evaporative Emission Control System Leak Detected (small leak)
- P0455 - Evaporative Emission Control System Leak Detected (gross leak)
- P0700 - Transmission Control System Malfunction
- P0301 - Cylinder 1 Misfire Detected
- U0100 - Lost Communication With ECM/PCM A
Related Vehicles
Part of the free Know Your Ride vehicle maintenance reference. Figures are sourced from EPA, NHTSA and manufacturer data and are for general reference - always confirm with your owner's manual.