MIDRAND, South Africa--(BUSINESS WIRE)--MiX Telematics Limited (NYSE: MIXT, JSE: MIX), a leading global provider of fleet and mobile asset management solutions delivered as Software-as-a-Service (SaaS), today announced financial results for its fourth quarter and full fiscal year 2015, which ended March 31, 2015. "We have closed out fiscal year 2015 with solid revenue growth, strong profitability and excellent cash flow. We grew subscription revenue 17%, posted a 20% Adjusted EBITDA margin and