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.
Home / New Cars / Mazda / 2017. Mazda is on a roll with great new products like the Mazda3, Mazda6 and CX-5 crossover thanks to the brand's SkyActiv technology. The MX-5 and CX-9 help round out the lineup with diesel engines coming soon.