Turbocharger Information - Mazda CX-5 2018 Owner's Manual

After driving at freeway speeds or up a long hill, idle the engine at least 30 seconds before
stopping it. Otherwise, the turbocharger could be damaged. However, when i-stop
operates, idling is unnecessary.
Racing or over-revving the engine, particularly after it's just been started, can damage the
turbocharger.
To protect the engine from damage, the engine is designed so that it cannot be raced just
after starting it in extremely cold weather.