2017 TOYOTA TACOMA, ODOM AT 9250. NO AFTERMARKET ADD-ONS: AFTER 28 MILE COMMUTE IN 4X4, PARKED IN DRIVEWAY, PLUGGED IN FACTORY INSTALLED BLOCK HEATER (@ 12 DEG F), 1 HOUR LATER EXPLOSION HEARD (WALLS OF HOUSE SHOOK), BLEW HOOD OFF, UP AND AGAINST WINDSHIELD. MULTIPLE EXPLOSIONS HEARD, FRONT TIRES & ENGINE COMPARTMENT ON FIRE, FLAMES 30 FEET HIGH, ALL WINDOWS BLOWN OUT, ENTIRE CABIN (EXTENDED CAB) ENGULFED IN FLAMES, INTENSE HEAT FUSED DOORS CLOSED, MELTED ALUMINUM VIN PLATE & FRONT LICENSE PLATE. ALL DASHBOARD AND STEERING COLUMN REDUCED TO ASHES. DOG KENNEL AND ALL CONTENTS OF CABIN CONSUMED IN FIRE. CANOPY ON LONG BED AND REAR OF VEHICLE INTACT DUE TO QUICK ARRIVAL OF FIRE DEPARTMENT. NO INJURIES ONLY BECAUSE PEOPLE AND DOG HAD PREVIOUSLY LEFT VEHICLE WHEN ARRIVING AT HOME. OWNER HAD COMPLAINED TO TOYOTA PREVIOUSLY ABOUT ENGINE SMELLING HOT AFTER ALL COMMUTES, CHECKED IT AT DEALER PREVIOUSLY TO DETERMINE PROBLEM AND THEY FOUND NOTHING DURING EXAM. VEHICLE WAS RESCHEDULED TO CHECK FOR SOURCE OF HOT ENGINE SMELL, AT 10,000 MILE CHECKUP/OIL CHANGE 4 DAYS AFTER FIRE OCCURRED. NO RECALLS OR PENDING NOTICES KNOWN AT TIME OF INCIDENT. VEHICLE HAD STARTING PROBLEMS EVEN DURING WARM WEATHER. IN TOWN MPG SHOWED ON DASHBOARD AT 5-9.5 MPG, HWY AT 16-19.5.