Do car battery replacement problems track share of residents living in coastline counties across states?
Car battery replacement complaints run higher where share of residents living in coastline counties is higherNHTSA owner complaints about car battery replacement run 11% above what the makes sold there would predict in the 10 states with the highest share of residents living in coastline counties, and 4% below in the 10 with the lowest.
What it shows: States with more share of residents living in coastline counties tend to sit higher on the chart across 51 states: a pattern in the data, not proof of cause.
Data: U.S. Census Bureau Coastline Counties list 2016 with state population, joined to NHTSA owner complaints, downloaded 2026-10-12 · 51 states. Chart: CalcScrape · calcscrape.com
A firm pattern: fewer than 1 in 100 patterns this clear turn out to be false alarms. Weak spot: hold cost of living index equal and only 24% of the share of residents living in coastline counties pattern remains, so part of it may be that factor.