Complex sentence: The Alliance and Encore were essentially the Renault 9 & 11 slightly re-engineered for North American manufacture--featuring exterior styling by Robert Opron and interior styling by AMC's Richard Teague.
Split into simpler sentences: The Alliance and Encore were essentially the Renault 9 & 11 slightly re-engineered for North American manufacture. They featured exterior styling by Robert Opron and interior styling by AMC's Richard Teague.