I have a 2004 garaged RX-8. I live in Houston, so it's not too cold here. When I start my car it's slow to start. Maybe 3-4 seconds. Also, gauges go a little crazy. But, once I drive it and it warms up, I can restart it and it fires right up. Also, there are no check engine lights or any other lights on. I have a Mazda battery that is exactly two years old. Brand new engine at that time also.