1st Gen
Cadillac CT6 (2016–2020)
Maintenance Schedule
7 recurring services keep the 2016–2020 Cadillac CT6 healthy — starting with oil changes every 7,500 miles. Budget roughly $2,200–3,400 in routine maintenance over 100,000 miles at typical U.S. shop prices.
Applies to model years 2016, 2017, 2018, 2019, 2020
Full schedule
Intervals follow the factory maintenance schedule for the 2016-2020 Cadillac CT6. Cost ranges are typical U.S. shop prices.
| Service | Interval | Est. cost | Notes |
|---|---|---|---|
| Oil Change | Every 7,500 mi or 12 mo | $70–105 | Engine oil and filter replacement |
| Air Filter | Every 22,500 mi or 12 mo | $55–80 | Engine air filter replacement |
| Cabin Filter | Every 22,500 mi or 12 mo | $50–75 | Cabin air filter replacement |
| Transmission Service | Every 45,000 mi or 4 yr | $240–360 | Transmission fluid and filter change |
| Brake Fluid | Every 45,000 mi or 2 yr | $130–190 | Brake fluid flush and replacement |
| Spark Plugs | Every 97,500 mi or 6 yr | $170–270 | Spark plug replacement |
| Coolant Service | Every 150,000 mi or 5 yr | $160–250 | Coolant flush and replacement |
Common questions
How often should I change the oil on a 2016–2020 Cadillac CT6?
Every 7,500 miles or 12 months, whichever comes first. A typical U.S. shop charges $70–105. Engine oil and filter replacement.
How much does it cost to maintain a Cadillac CT6 (2016–2020)?
Routine maintenance on the 2016–2020 Cadillac CT6 runs roughly $2,200–3,400 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 CT6?
Transmission Service at $240–360, due every 45,000 miles. Transmission fluid and filter change.
Cost ranges are typical U.S. independent-shop and dealer estimates; your local prices vary. Severe driving — towing, short trips, extreme heat or cold — shortens many intervals. Information here is general and may be estimated or AI-assisted — not professional, medical, or veterinary advice. Verify against your owner's manual, a professional, or your vet before acting. See our Terms & Disclaimer.