Ford Mustang vs Toyota Corolla
Compact car · 2015–2020 · 2,655 federal complaints

Ford Mustang
1,464 complaints · 4 engines
Most-complained engine: 4VPREMIUMFUEL · 2.3L I4
Full breakdown for Ford Mustang →
Toyota Corolla
1,191 complaints · 4 engines
Most-complained engine: 2ZR-FE · 1.8L I4
Full breakdown for Toyota Corolla →Side by side
Both cars scored as percentiles within Compact car, so the shapes are directly comparable. Built from EPA test data.
Ford MustangToyota Corolla
What each one's complaints are about
Showing each car's highest-volume engine. Share of component mentions — not a failure rate, and not a ranking between the two.
Ford Mustang
762complaints
Engine 16%Electrical 13%
Toyota Corolla
747complaints
One car having more complaints than the other mostly reflects how many were sold, not how often they break. Compare each car's own mix of problems — not the totals.