The 2019 ATS is a capable luxury sport sedan let down by catastrophic 2.0T engine failures and transmission cooling issues. The 2.0L turbo four is a ticking time bomb after 60k miles, while the 3.6L V6 is significantly more reliable but thirsty.
2.0T Catastrophic Engine Failure (Piston Ring / Bearing Collapse)
Common · high severityTypical onset: 60,000-110,000 mi
Symptoms: excessive oil consumption (1qt per 1000mi or worse), timing chain rattle on cold start, metallic knocking under load, low oil pressure warning, loss of power, check engine light with misfire codes
Fix: Total engine replacement or rebuild required. Piston rings fail from carbon buildup causing oil burning, followed by bearing starvation. GM extended warranty to 120k/10yr on some VINs but many fall outside coverage. 18-25 labor hours for short block swap, more for full rebuild.
Estimated cost: $6,500-12,000
Transmission Oil Cooler Line Leaks
Common · high severityTypical onset: 50,000-90,000 mi
Symptoms: transmission fluid puddles under vehicle, burnt transmission fluid smell, slipping gears or delayed engagement, overheating transmission temp warning, pink fluid leaking near radiator area
Fix: Cooler lines corrode where they connect to radiator and transmission. Must replace both lines and often the external cooler itself. Flush transmission fluid. 3-5 labor hours depending on access.
Estimated cost: $800-1,400
Transmission Mount Failure
Occasional · medium severityTypical onset: 70,000-120,000 mi
Symptoms: harsh clunk when shifting from park to drive, excessive vibration at idle, transmission movement visible under acceleration, knocking sound over bumps
Fix: Hydraulic transmission mount collapses, especially on 2.0T models with aggressive driving. Replace mount and inspect for fluid leaks. 2-3 labor hours.
Estimated cost: $350-650
High Pressure Fuel Pump Failure (2.0T)
Occasional · high severityTypical onset: 80,000-130,000 mi
Symptoms: hard starting when engine is hot, loss of power under acceleration, rough idle and hesitation, fuel smell in cabin, check engine light with fuel pressure codes P0087/P0088
Fix: Direct injection high-pressure pump fails internally, contaminating fuel system. Must replace pump, filter, and flush fuel lines. Often requires injector cleaning. 4-6 labor hours.
Estimated cost: $1,200-2,200
CUE Infotainment System Freeze / Screen Failure
Common · low severitySymptoms: touchscreen unresponsive, system reboots randomly, backup camera black screen, climate controls frozen, Bluetooth disconnects
Fix: CUE system notorious for software glitches and screen delamination. Software updates help temporarily but hardware replacement often needed. 2-3 labor hours for module replacement.
Estimated cost: $800-1,800
Timing Chain Stretch (2.0T)
Occasional · high severityTypical onset: 90,000-140,000 mi
Symptoms: rattling on cold start for 3-5 seconds, check engine light with cam/crank correlation codes, rough running, reduced fuel economy, engine stalling in severe cases
Fix: Timing chain stretches due to oil quality issues and high-pressure turbo system. Requires chain, guides, tensioner, and often VVT solenoids. Do NOT delay—chain failure causes valve-piston contact. 8-12 labor hours.
Estimated cost: $2,000-3,500
Avoid the 2.0T unless you enjoy expensive surprises; the V6 is worth seeking out, but even then there are better luxury sport sedans at this price point.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.