The 2017 Renault Logan BR (Brazilian market) is a budget sedan built on Renault's B0 platform with flexible-fuel engines. While mechanically simple and fuel-efficient, these units suffer from characteristic Renault powertrain issues, particularly valve train noise, timing chain stretch, and premature head gasket failures on higher-mileage examples.
Timing Chain Stretch and Tensioner Failure
Common · high severityTypical onset: 60,000-100,000 mi
Symptoms: Rattling noise on cold start that disappears after warm-up, Check engine light with VVT solenoid codes, Rough idle and loss of power, Metallic grinding from timing cover area
Fix: Requires timing chain kit replacement including tensioner, guides, and both VVT solenoids. Critical to replace before catastrophic failure. 6-8 hours labor for chain replacement, often requires cylinder head removal for proper access on 1.6L.
Estimated cost: $1,200-2,200
Hydraulic Valve Lifter Noise and Collapse
Common · medium severityTypical onset: 50,000-90,000 mi
Symptoms: Persistent ticking or tapping from valve cover, Noise worse when engine is hot, Occasional misfire codes, Loss of compression in affected cylinders
Fix: Renault's hydraulic lifters are notorious for failing prematurely, especially with ethanol fuel use in BR market. Replacing all lifters requires camshaft removal. 8-10 hours labor including valve cover, timing components, and camshaft R&R. Always replace all lifters together.
Estimated cost: $1,400-2,600
Head Gasket Failure (1.6L SCe)
Occasional · high severityTypical onset: 80,000-130,000 mi
Symptoms: White smoke from exhaust on startup, Coolant loss with no visible leaks, Overheating under load, Milky oil or coolant in expansion tank, Rough running and misfires
Fix: The 1.6L SCe has inadequate head bolt torque design leading to gasket failure. Requires cylinder head removal, resurfacing, and complete gasket set. Head must be checked for warping (common). 12-14 hours labor. Often discovered during timing chain service.
Estimated cost: $2,200-3,800
Transmission Oil Cooler Leaks (Automatic)
Common · medium severityTypical onset: 70,000-110,000 mi
Symptoms: Transmission fluid pooling under vehicle, Pink or red fluid mixing with coolant in radiator, Transmission overheating warnings, Harsh shifting when hot
Fix: The integrated transmission oil cooler in the radiator develops leaks, causing cross-contamination. Requires radiator replacement and complete transmission fluid flush. If coolant entered transmission, internal damage likely. 4-5 hours labor for cooler/radiator replacement, more if transmission needs service.
Estimated cost: $800-1,400
Harmonic Balancer Deterioration
Occasional · medium severityTypical onset: 90,000-140,000 mi
Symptoms: Vibration at idle that worsens with RPM, Visible rubber separation between pulley layers, Serpentine belt misalignment or wear, Squealing from accessory belt area
Fix: The rubber damping layer separates from the hub, causing severe vibration and potential crankshaft damage if ignored. Replacement requires removal of accessory belts and front engine mount support. 3-4 hours labor. Must use OE-quality part for proper damping.
Estimated cost: $450-750
Transmission Mount Collapse
Common · low severityTypical onset: 50,000-80,000 mi
Symptoms: Clunking when shifting from Park to Drive, Excessive engine movement visible from engine bay, Vibration through shifter and cabin at idle, Harsh engagement into gear
Fix: Hydraulic transmission mount fails frequently due to heat exposure from engine and transmission. Simple replacement but requires supporting powertrain. 2-3 hours labor. Replace both engine and transmission mounts simultaneously for best results.
Estimated cost: $350-600
Affordable and efficient when maintained religiously, but timing chain and valve train issues make these costly to repair above 80k miles—only buy with complete service records and budget for imminent engine work on higher-mileage examples.
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.