Kia Soul vs Mercedes-Benz C-Class
Compact car · 2015–2020 · 2,996 federal complaints

Kia Soul
1,785 complaints · 7 engines
Most-complained engine: GDIGAMMA · 1.6L I4
Full breakdown for Kia Soul →
Mercedes-Benz C-Class
1,211 complaints · 3 engines
Most-complained engine: M264 · 2.0L I4
Full breakdown for Mercedes-Benz C-Class →Side by side
Both cars scored as percentiles within Compact car, so the shapes are directly comparable. Built from EPA test data.
Kia SoulMercedes-Benz C-Class
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.
Kia Soul
412complaints
Engine 47%
Mercedes-Benz C-Class
825complaints
Engine 23%Body & structure 10%Fuel system 13%
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.