1st Gen
Cadillac CT4 (2020–2026)
Maintenance Schedule
7 recurring services keep the 2020–2026 Cadillac CT4 healthy — starting with oil changes every 7,500 miles. Budget roughly $1,900–2,900 in routine maintenance over 100,000 miles at typical U.S. shop prices.
Applies to model years 2020, 2021, 2022, 2023, 2024, 2025, 2026
Full schedule
Intervals follow the factory maintenance schedule for the 2020-2026 Cadillac CT4. Cost ranges are typical U.S. shop prices.
| Service | Interval | Est. cost | Notes |
|---|---|---|---|
| Oil Change | Every 7,500 mi or 12 mo | $60–90 | Engine oil and filter replacement |
| Air Filter | Every 22,500 mi or 12 mo | $45–70 | Engine air filter replacement |
| Cabin Filter | Every 22,500 mi or 12 mo | $40–65 | Cabin air filter replacement |
| Transmission Service | Every 45,000 mi or 4 yr | $200–300 | Transmission fluid and filter change |
| Brake Fluid | Every 45,000 mi or 2 yr | $110–170 | Brake fluid flush and replacement |
| Spark Plugs | Every 97,500 mi or 6 yr | $150–230 | Spark plug replacement |
| Coolant Service | Every 150,000 mi or 5 yr | $140–220 | Coolant flush and replacement |
Common questions
How often should I change the oil on a 2020–2026 Cadillac CT4?
Every 7,500 miles or 12 months, whichever comes first. A typical U.S. shop charges $60–90. Engine oil and filter replacement.
How much does it cost to maintain a Cadillac CT4 (2020–2026)?
Routine maintenance on the 2020–2026 Cadillac CT4 runs roughly $1,900–2,900 over 100,000 miles at typical U.S. shop prices, spread across 7 recurring services. Independent shops usually land near the low end; dealers near the high end.
What is the most expensive scheduled service on this CT4?
Transmission Service at $200–300, due every 45,000 miles. Transmission fluid and filter change.
Cost ranges are estimates for typical U.S. independent shops and dealers; your local prices will vary. Always confirm intervals against your owner's manual — severe driving conditions (towing, short trips, extreme heat or cold) shorten many of them.