Same great turbocharged in-line six engine, but two very different BMW M3 sedan experiences. Is iD8 the problem?

It’s hard to imaging a more enticing wagon package than BMW’s new M3 Touring. But Manhart has done exactly that.

The Competition Package costs an extra £3,315. And while that may seem a lot, the revised suspension and electronic systems will really aid keen drivers. BMW expects around half of M3 Coupé ...