All Mitsubishi Outlander XL owners face this problem. The smell comes from a catalyst. It's because of the moisture that gets on it. Over time, the smell should be gone. There is also an opinion that the rear wheel ant smells of rubber. In either case, there is no single solution to the problem. Experts advise the car wash to clean the dirt from the silencer, which is accumulating enough. However, after this procedure, the smell does not disappear completely.
