The 2024 Buick Encore uses a second-generation 1.4L turbo four-cylinder that's carried over from earlier model years, sharing the same inherent weaknesses GM never fully resolved. While newer examples haven't hit catastrophic failure mileage yet, the pattern established by 2013-2023 models with this engine points to significant long-term durability concerns.
1.4L Turbo Piston Ring Failure & Oil Consumption
Common · high severity
Typical onset: 60,000-100,000 mi
Symptoms: Burning 1+ quart oil every 1,000 miles, Blue smoke on startup or acceleration, Fouled spark plugs, P0300 random misfire codes, Loss of power under load
Fix: Piston rings fail due to carbon buildup in ring lands. Requires full engine teardown, hone cylinders, replace all rings and bearings. 18-24 labor hours. Many shops recommend short-block replacement instead given labor overlap—add 2-4 hours but you get new pistons, crank, rods.
Estimated cost: $4,500-7,500
Turbocharger Wastegate Actuator & Seal Leaks
Occasional · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: P0299 underboost code, Sluggish acceleration, Whining or rattling from engine bay under boost, Oil residue around turbo housing
Fix: Wastegate actuator sticks or diaphragm tears; oil seals leak into intake. Turbo replacement is typical solution—GM doesn't sell rebuild kits for these units. 5-7 labor hours including coolant and oil service.
Estimated cost: $1,800-2,800
Transmission Oil Cooler Line Leaks
Common · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: Transmission fluid spots under vehicle, Low fluid warning light, Delayed or harsh shifts when hot, Pink/red fluid visible near radiator area
Fix: Rubber hoses crack at crimp points, steel lines corrode at brackets. Replace both cooler lines as a set—one fails, the other is close behind. 2-3 labor hours, includes fluid refill and leak check.
Symptoms: Rattling from front of engine on cold start, Check engine light with cam/crank correlation codes, Rough idle that smooths after warm-up, Catastrophic failure: sudden no-start, bent valves
Fix: This engine uses a timing belt running in oil—debris from piston ring issues contaminates it. If belt fails, valves contact pistons. Preventive replacement at 80k-100k recommended despite no official interval. 8-10 labor hours, includes valve cover gasket, cam seals, water pump if accessible.
Estimated cost: $1,200-2,000
PCV System Clogging & Intake Valve Carbon Buildup
Common · medium severity
Typical onset: 40,000-80,000 mi
Symptoms: Rough idle, Hesitation on acceleration, Check engine light with lean codes or misfires, Oil in intake tubing, Whistling noise from engine
Fix: Direct injection means no fuel washing valves—carbon accumulates. PCV valve and hoses clog, increasing crankcase pressure and oil consumption. Walnut-blast cleaning every 60k miles recommended; PCV refresh at same interval. Cleaning: 4-5 hours. PCV system: 1-2 hours.
Estimated cost: $500-900
Engine Mount (Transmission Mount) Failure
Occasional · low severity
Typical onset: 60,000-100,000 mi
Symptoms: Clunking when shifting from Park to Drive, Excessive vibration at idle, Engine rocks noticeably during acceleration, Shifter vibrates in gear
Fix: Hydraulic mounts leak fluid and collapse. Right-side and rear transmission mount most common. Replace in pairs to avoid repeat issues. 2-3 labor hours depending on access.
Estimated cost: $400-700
Owner tips
Check oil every 500 miles—these engines consume oil by design even when healthy; running low accelerates ring failure.
Use TOP TIER fuel religiously and add intake cleaner every oil change to slow carbon buildup on valves.
Budget for walnut-blast cleaning at 60k and 120k miles—$500 now beats $5,000 later.
If buying used, request oil consumption records and avoid anything burning more than 1 quart per 2,000 miles.
Timing belt replacement at 80k-100k is not optional despite GM omitting it from maintenance schedule.
Hard pass unless it's a lease or you're planning to offload before 70k miles—this engine has a decade-long track record of expensive failures GM never fixed.
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.
Fitment notes: H6 group also compatible; AGM required for Start-Stop system
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Every control module on the 2023-2026 Buick Encore — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
📍 Under driver or passenger seat, mounted to seat frame
⚠️ Controls power seat, heated/ventilated seat functions; typically plug-and-play
Rear Vision Camera Module (RVCM)0.5 hr R&Rno coding
📍 Integrated into rear liftgate handle assembly
⚠️ Plug-and-play replacement; HD camera with dynamic guidelines displayed by infotainment
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2024 Buick Encore 1.4L Turbo I4 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.