Stop/start cars left in gear.

Stop/start cars left in gear.

Author
Discussion

kazste

Original Poster:

5,679 posts

199 months

Sunday 27th July 2014
quotequote all
Okay so was thinking about this the other day and while I suppose I could try it out really don't want too!
My car has this stop start technology so can sit at the lights with the clutch up and engine will stop.

I can however put the car into first without using the clutch and the engine will not start as no clutch used.

If the clutch was now depressed would the engine start and presumably drag first a little bit?

Second point is my car will also re start the engine should the car require it, for battery levels and such like, does this mean if the car was in first the car is smart enough to know and not restart or does it mean that a startled driver would go straight into the car in front?

Obviously the answer is, well don't leave it in first then, but if wonder how many do without thinking

kazste

Original Poster:

5,679 posts

199 months

Sunday 27th July 2014
quotequote all
My car is a mini and a bmw, which I presume is roughly the same software, engine will restart either on its own depending on parameters or with the clutch depressed. It does not seem to drag if in first and then clutch pressed so suspect it needs to be fully disengaged was just wondering if anyone has had it start in gear.

A post earlier stating the car will know its in gear made me remember that a friends Audi will show you what gear you are in so presume that this would be the case. This then leads me to think on a hot day in a traffic jam you could leave the car in first to stop it restarting itself. This would mean you keep air on running as opposed to turning the engine off properly.

This is of course ignoring the whole running out your battery issue.

kazste

Original Poster:

5,679 posts

199 months

Monday 28th July 2014
quotequote all
The more I think about it modern cars definitely would know it is in gear. My car for example shouts at me if I'm not in the most economic gear as do a lot of cars so they definitely do know which gear they're in which leads me to think it would start alarming if it needed to start the engine as per the poster above, and would only start when in neutral.