4. BMW M3 E36 US-Spec
Built from 1992 to 1999, the E36 M3 featured a newly designed six-cylinder plant. Earlier models had a 3.0-liter engine with 291 hp, but from 1995 until the end of production, the bigger 3.2-liter with 321 hp was installed. Unfortunately, in America, the E36 M3s had only 240 hp due to emissions regulations which crippled the otherwise pretty powerful BMW engine (via Road and Track).
Even though the lack of power didn’t affect performance that much, US-spec models had somewhat problematic interiors, which proved very fragile. The car sold in sufficient numbers, but customers felt a bit shortchanged.