I would expect a _good_ car (no maintenance issues, new gas, newer battery) to go at least a couple months without being driven and not have any issues upon starting it up.
The average car in average condition should go around a month without being driven. Anything less than that either means a battery nearing the end of its life, not getting charged, or a parasitic draw somewhere.
We have a 10 year old Honda Odyssey that we keep just for long road trips and it has gone 3-4 months without being driven with no issues. I usually do try to fire it up every 1-2 months just to make sure the battery gets a charge and to avoid long term storage issues around oil and belts and other parts that degrade.
Thanks, that's good advice. Luckily we've burned a tank or so every road trip (every few months) but I was wondering about that and whether it was good for gas to sit so long.
I park up my hilux for a year at a time, sometimes, and it Just Starts. Sure, it’ll take three attempts with a cold, damp engine and a sluggish battery, but it has yet to let me down.
Had one of those, too, and used to hide it in a pint of Guinness for a laugh. Dropped it in the sea a few times. Accidentally melted it slightly in a small housefire. It lived on after I moved on to a t68i as an SMS gateway for my home server for my one-man proto-Twitter.
The average car in average condition should go around a month without being driven. Anything less than that either means a battery nearing the end of its life, not getting charged, or a parasitic draw somewhere.