Jun 21, 2016 · BMW B58 turbo. Posted on June 21, 2016 by bmwtechnician Ok here we go again,,,this is a new turbo off the new B58 6 cylinder engine,,,you can see the the new turbo is ... The B58 will be the six-cylinder variant set to replace the N55 inline-6 and we will take a look at that motor in comparison to the N55 once more information is available. One can basically take a B48 and add two cylinders to get an idea of what the B58 will offer. Hey guys, I'm looking to get into a newer car in around a year or so but was just wondering if the 340i is loads of improvement over the 335i. Lease returns on 340i's will probably start coming in more and more in 2020 because people usually do 4-year leases while some 335i's will return sooner. The split-half reliability method usually shows artificially high reliability on tests where speed is a factor. Because it looks at odd vs. even response of the same test, split-half reliability can yield a spuriously high reliability coefficient, especially on tests where speed is a factor. -----22. Describe reliability of fixed performance ... Oct 27, 2015 · Those that follow the Wards awards (yes, that sounds awkward to me too) know that BMW is a perennial winner. The Best Engine awards is just one of many things that Wards does. Today, the Wards Auto Engine & Technology Update showed up in my inbox, and it included a tech heavy discussion of the new B58 engine that powers the 340i.