Work is underway on exhaust systems for both the sedan and 5-door versions. As with most new Mazda applications, there typically is a delay with the introduction of new replacement parts in the dealer distribution chain – critical for the comparison and design of our welding fixtures. We’ve finally gotten our hands on a OE muffler for the sedan model and prototype work and test fitting has begun. Since the 2019 Mazda 3 features a completely new rear suspension configuration as compared with the earlier model, unfortunately a complete muffler redesign is required. We’ve since had access to a 2019 sedan model, we’re confident that the sedan/5-door muffler shapes and configurations are similar, but the muffler outlet tubes on the 5-door are significantly shorter – meaning there will be a completely separate exhaust for both the sedan and 5-door models. Prototype work and test fitting will continue through the spring of 2020, more to come.