The redesigned 2004 BMW 530i replaced the model that was CR's best car tested for two years, but it didn't quite keep that car's winning streak going. This new version has slightly improved fuel economy and rear-seat room. But these gains are offset by the complicated iDrive multifunction control system and less-agile handling. The BMW has a stronger powertrain than some competing models, and a station wagon version remained available. Overall though, while this version of the 530i is an excellent car, it doesn't live up to the high expectations set by its predecessor.