Let's wait until the official government report is released. At this stage, plenty of automotive companies are under scrutiny. It would be naive to think that most companies won't negligibly manipulate some variable parameters in their favour. There is a difference between falsifying tests and actually implementing a cheating device on its vehicles (VW). I've never achieved the claimed manufacturer fuel mileage figures on any vehicles I've driven and I've driven plenty in my lifetime. Fuel consumption figures are just a guide and tested under strict conditions. As far as Mazda's go 'in the real world', I believe the actual fuel consumption figures from it's NA engines gets close to its claims compared to many other NA and Turbo drivetrains.