The 2016 Buick Envision is GM's first China-built crossover sold in North America, sharing platform DNA with the Cadillac XT5. The 2.0L turbo is more common and generally more durable than the base 2.5L, but both engines and the 6-speed automatic have significant design weaknesses that lead to catastrophic failures.
2.5L Engine Catastrophic Piston/Ring Failure
Occasional · high severityTypical onset: 60,000-90,000 mi
Symptoms: excessive oil consumption (quart per 1,000 miles or worse), blue smoke on cold start, severe knock or rattle from crankcase, check engine light with misfire codes, complete loss of compression
Fix: The 2.5L Ecotec (LCV) suffers from piston ring land failures and skirt cracking, contaminating oil and scoring cylinder walls. Requires complete engine replacement or full rebuild with updated pistons. 18-24 labor hours for removal, rebuild/replace, and reinstall. Many shops opt for remanufactured long block.
Estimated cost: $5,500-8,500
2.0L Turbo Timing Chain Stretch and Tensioner Failure
Common · high severityTypical onset: 80,000-120,000 mi
Symptoms: cold-start rattle for 2-3 seconds, check engine light with cam/crank correlation codes, rough idle and hesitation, sudden no-start with bent valves if chain jumps
Fix: The LTG 2.0T uses a wet timing chain prone to stretch with inadequate oil change intervals. Chain, guides, tensioner, and both VVT actuators need replacement. If chain jumped timing, add cylinder head work for bent valves. 12-16 hours for chain service, 25+ hours if valves are damaged.
Estimated cost: $2,200-3,800
Transmission Oil Cooler Line Leak and Contamination
Common · high severityTypical onset: 50,000-90,000 mi
Symptoms: transmission fluid in coolant (strawberry milkshake in reservoir), transmission slipping or harsh shifts, overheating transmission, pink residue under radiator cap
Fix: Internal transmission cooler in radiator fails, allowing coolant into ATF (or vice versa). Requires new radiator, complete transmission flush with multiple fluid exchanges, often new transmission if contamination went undetected. 8-12 hours for radiator/flush, 18-22 hours if transmission is damaged and needs replacement.
Estimated cost: $1,800-6,500
6T45 Transmission Torque Converter Shudder
Common · medium severityTypical onset: 40,000-80,000 mi
Symptoms: vibration at 35-45 mph under light throttle, feels like driving over rumble strips, shudder when accelerating from stop, worse when transmission is warm
Fix: Torque converter clutch material deteriorates, creating shudder. GM released updated fluid (Mobil 1 LV ATF) and friction modifier additive that often temporarily resolves issue, but many need torque converter replacement. 9-11 hours for converter R&R.
Estimated cost: $400-2,800
Fuel Pump Control Module Failure
Occasional · high severitySymptoms: intermittent no-start, stalling while driving, loss of power at highway speeds, check engine light with fuel pressure codes, fuel pump runs constantly or not at all
Fix: Control module (located in rear under vehicle near fuel tank) fails due to corrosion or internal short. Subject to recall 16V580 but many units fail outside recall criteria. Module replacement takes 1.5-2 hours. If fuel pump itself is damaged, add 3-4 hours for tank drop and pump replacement.
Estimated cost: $450-1,200
Rear Transmission Mount Collapse
Common · low severityTypical onset: 60,000-100,000 mi
Symptoms: clunk when shifting from park to drive/reverse, vibration at idle in gear, excessive driveline movement visible when accelerating, transmission appears to sag
Fix: Hydraulic rear transmission mount deteriorates and collapses, allowing excessive drivetrain movement. Common on all GM vehicles with transverse powertrains. Mount replacement takes 2-3 hours including subframe lowering.
Estimated cost: $400-650
Water Pump Failure (2.0L Turbo)
Occasional · high severityTypical onset: 70,000-110,000 mi
Symptoms: coolant leak from front of engine, overheating, squealing noise from accessory drive, coolant smell in cabin, steam from under hood
Fix: Belt-driven water pump develops seal or bearing failure. Often leaks internally first, then externally. Replacement requires coolant drain, belt removal, and pump R&R. 2.5-3.5 hours labor. Address immediately as overheating can warp heads or crack block.
Estimated cost: $450-750
Hard pass unless it's a 2.0L turbo with complete maintenance records, priced at significant discount, and you have a $3,000-5,000 repair fund — too many expensive powertrain grenades for the average used buyer.
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.