Expire is not really the right term; but effectively yes. In general a cheque older than six months will be considered stale-dated and will not be honoured. Reference the Canadian Payments Association FAQ.
SKYACTIV is a brand name for a series of technologies developed by Mazda which increase fuel efficiency and engine output. The initial announcement of the SKYACTIV technologies include new engines, transmissions, body, and chassis, which appeared in Mazda products from 2011.
THE 2017 MAZDA6. A safer driver starts with smarter technology. Get maximum confidence and enjoyment out of your drive knowing that Mazdaâs available advanced safety systems are constantly working to alert you to potential hazards, help avert collisions, or reduce their severity.