The 2018 Cadillac Ats carries 2 open NHTSA recalls — most recently covering fuel pump and electric power assist system. Owners report 6 recurring issue clusters, led by “Power steering cutout while driving.” Cadillac uses the GM Oil Life System: an algorithm watches engine revolutions, temperature, and load, then lights the change-oil message — typically around 7,500 miles in mixed driving, capped at 12 months, with dexos-approved oil. Turbo fours in ATS, CT4, XT4, and XT5 are harder on oil than the indicator suggests in short-trip driving. Northstar-era V8s (DeVille, Seville, Eldorado) live and die by their cooling system — coolant condition checks are not optional on those cars. Escalade shares its 6.2L V8 and 10-speed with GM's trucks and follows the same fluid schedule.
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Campaign #18V358000 · May 31, 2018
Issue: General Motors LLC (GM) is recalling certain 2015-2018 GMC Canyon, 2016-2017 Buick Envision, 2016-2018 Chevrolet Colorado and Malibu, 2017-2018 GMC Acadia, 2018 Buick LaCrosse, Cadillac ATS, Chevrolet Equinox, and GMC Terrain vehicles. The high pressure fuel pump may detach from its mounting flange, possibly resulting in the pump damaging the high pressure fuel line.
Risk: A damaged fuel line can create a fuel leak, increasing the risk of a fire.
Fix: GM will notify owners, and dealers will replace the high pressure fuel pump, and high pressure fuel pipe, free of charge. The recall began July 2, 2018. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 18188.
STEERING:ELECTRIC POWER ASSIST SYSTEM
Campaign #25V175000 · Mar 20, 2025
Issue: General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CTS, 2017-2018 Cadillac ATS, Chevrolet Camaro, and Chevrolet Corvette vehicles. The electric power steering (EPS) assist may fail.
Risk: A loss of power steering assist can require greater steering effort, especially at low speeds, increasing the risk of a crash.
Fix: Dealers will replace the power steering gear assembly, free of charge. Owner notification letters were mailed April 15, 2025. Owners may contact Cadilac customer service at 1-800-333-4223 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N252497020.
What drivers and federal regulators have officially reported about the 2018 Cadillac Ats.
STEERING
3 NHTSA complaints · 2020-08 → 2025-07
“My vehicle recently started experiencing an issue where the power steering would randomly cut out while I was driving”
“The power steering will randomly stop working while driving! We have had it in the shop 3 times and they can't find anything!”
“NO POWER STEERING CLUSTER WARNING SAYS SERVICE POWER STEERING DRIVE WITH CARE”
ELECTRICAL SYSTEM
3 NHTSA complaints · 2020-05 → 2024-06
“The car was parked outside at around 85 degrees. After entering the vehicle and driving with the AC on for a few minutes the CUE screen started to crack on the inside like a spider web”
“Hi, the cue screen is cracked which makes it no longer handsfree”
“THE SCREEN IS STARTING TO SPIDER CRACK UNDERNEATH THE GLASS. VEHICLE WAS STATIONARY IN MY DRIVEWAY”
POWER TRAIN
3 NHTSA complaints · 2023-04 → 2025-07
“This put me at risk of potentially locking up while driving”
“The contact owns a 2018 Cadillac ATS. The contact stated while driving at undisclosed speeds, there was an abnormal growling sound coming from the vehicle”
“The contact owns a 2018 Cadillac ATS. The contact stated while driving 35 MPH, there was an abnormal sound coming from the rear of the vehicle”
POWER TRAIN
3 NHTSA complaints · 2022-06 → 2023-06
“Unexpected shutter of vehicle, loss of power, unpredictable forward motion, erratic movement, delayed acceleration”
“The transmission fluid is wrong fluid by manufacturer and driving at regular speed all of a sudden it starts shuddering and loses power or slows down at freeway speeds or any local roads”
“Transmission shudder noticed between 42 to 48 mph”
AIR BAGS
2 NHTSA complaints · 2022-03 → 2023-06
“The contact owns a 2018 Cadillac ATS. The contact stated that while the front passenger’s side seat was occupied, the air bag (SRS) restraint system warning light illuminated”
“Vehicle was involved in a accident all front damage and airbags didn’t deploy”
FUEL/PROPULSION SYSTEM
2 NHTSA complaints · 2018-07 → 2024-06
“While driving started to smell gas. On same day, car stalled at an intersection in a downtown area. I could not start car”
“Auto shop I took to said the fuel pump came loose somehow and caused the fuel lines to break causing the fuel leak”
Issues on other model years
Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 11, 2026. Investigation data refreshed Sep 11, 2026.
We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.
Critical for safety and preventing major damage
Change when the Oil Life System calls it — typically around 7,500 miles, never beyond 12 months. dexos1 full synthetic on modern engines; Blackwing and supercharged V-Series run hotter and should not stretch the indicator. Northstar V8s: watch for consumption and leaks at the rear main and oil-pan perimeter.
Estimated cost — typical U.S. ranges
Dealer
~$120–$160
Shop
~$85–$115
DIY
~$25–$55
Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.
Rotate every 7,500 miles with the oil change — GM pairs the two. Staggered-fitment V-Series cars can't rotate front-to-rear; budget rear tires accordingly.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Often free at the shop where you bought the tires — worth asking before paying.
Inspect pads, rotors, and lines at every service. Brembo-equipped V-Series wear faster than the base cars; magnetic-ride models should also get a look at shock condition while it's on the lift.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.
Keeps your vehicle running smoothly and efficiently
GM lists roughly 45,000 miles under severe service (which includes most city commuting) for the 6/8/10-speed automatics. Older 4T80-E units behind Northstars respond well to a simple drain-and-fill — avoid pressure flushes on high-mile cars.
Estimated cost — typical U.S. ranges
Dealer
~$330–$500
Shop
~$235–$355
DIY
~$60–$180
Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.
Turbo fours (ATS 2.0T, CT4, XT4): roughly every 60,000 miles. Naturally-aspirated V6s and V8s carry iridium plugs rated to 97,500–100,000 miles — check the manual for your engine.
Estimated cost — typical U.S. ranges
Dealer
~$285–$390
Shop
~$200–$275
DIY
~$25–$100
Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.
GM schedules replacement around 45,000 miles; inspect at oil changes in dusty regions.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
5-minute job on most cars; the airbox lid usually has clips, no tools needed.
GM recommends fluid replacement about every 45,000 miles or 3 years. Magnetic-ride and V-Series cars driven hard should err toward the 2-year mark.
Estimated cost — typical U.S. ranges
Dealer
~$180–$200
Shop
~$125–$140
DIY
~$10–$25
DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.
Inspect from 60,000 miles; replace on cracking or glazing. Supercharged V-Series engines have a second, dedicated blower belt — inspect both.
Estimated cost — typical U.S. ranges
Dealer
~$195–$235
Shop
~$135–$165
DIY
~$20–$50
DIY-friendly if you can reach the tensioner. Inspect for cracks rather than swap on a strict mileage interval.
Extends the life of your vehicle and improves comfort
Replace roughly every 22,500 miles per GM's schedule — sooner if the climate fan has lost its punch.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.
Dex-Cool is rated 5 years / 150,000 miles. On Northstar V8s this is the schedule that decides the engine's fate — low or contaminated coolant is how head-gasket trouble starts. Check level and condition at every oil change on those cars.
Estimated cost — typical U.S. ranges
Dealer
~$285–$330
Shop
~$200–$235
DIY
~$25–$60
Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.
Test annually after year 3. Stop-start-equipped models and anything with Super Cruise use AGM batteries — replace like-for-like, and expect shorter life from the electrical load these cars carry parked.
Estimated cost — typical U.S. ranges
Dealer
~$225–$390
Shop
~$160–$280
DIY
~$130–$250
Most auto-parts stores test and install batteries free with purchase. Skip the dealer markup.
Occupant deaths in fatal crashes (FARS)
5 crashes 2010–2024
FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number
Owner-reported problem signals
Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.
1
complaints mentioning a crash
0
complaints mentioning a fire
Reviewed known issues for this vehicle·Open recalls for this vehicle
Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.
How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.
This maintenance schedule for the 2018 Cadillac Ats reflects Cadillac's published service intervals and the GM Oil Life System system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.