Hey folks, current 2015 Sonic LT Hatchback 1.8L owner looking to buy a 2020 Trax LT FWD - it’s a dealer demo with 4,000 miles for $17600. Our Sonic has been a fun car to drive but plagued by cooling system failures. Have replaced almost every cooling system part. Does the Trax have an Achilles heel as well? Any inherent problems?