2 identical satnavs - 2 different routes?

pvr

pvr

Dutch
 Ruler of the South East UK
As I am off on holiday tomorrow, and am taking both the X5 and the M, I put the destination address in both BMW systems. They are the same MKIV unit in both cars, same software version, using the same age OEM map disc.

With the same selection for fast route, how come one calculates a route that is 20 miles shorter then the other? Also, the route is very different and looking on a map it does not make a lot of sense. Anyone else has ever seen this when comparing the same systems?
 
I have a theory. I traveled to North Carolina twice in the last 40 days. On the first trip, my sat-nav gave me a route home I didn't follow so it adjusted during the trip and I saved 20 minutes and several miles. On the second trip, it gave me my preferred route from the beginning. I assumed it "learned" the alternate route after I drove it on the first trip.

Is it possible that you've made this trip either in full or in part in one of the vehicles previously? Does that vehicle's memory recall the alternative route? Just a thought. :idunno:
 
That's an odd one pvr because it's not an intelligent system that learns or downloads data about routes, traffic, delatys, etc. Be interesting when you and Mrs pvr drive there to see what happens and if the routes realign 5 minutes after you set off.
 
"Problem" is that the M is showing the route that makes sense, whilst the X5 is going all over the place and there is no mobile phone reception at our destination so Mrs PVR can not call me if she gets lost :D

Somehow, it will all be my fault 8)
 
pvr said:
"Problem" is that the M is showing the route that makes sense, whilst the X5 is going all over the place and there is no mobile phone reception at our destination so Mrs PVR can not call me if she gets lost :D

Somehow, it will all be my fault 8)
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you will just have to follow her all the way then. :evil:
 
I'm thinking it could be a difference in the mapping software....maybe one has a better fuzzy logic on quickest route, maybe one has a back road in it that the other does not.
 
sp3ctre said:
You haven't got any "avoid" settings in it do you, like "avoid motorways" etc?
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LOL...Mine actually avoids the correct addresses! It takes me to the wrong places so much, I dont even bother with it anymore. Im getting a GARMIN portable...
 
I just picked up a Garmin 660 and tried it out on a trip to Niagara Falls last week. It gave me a somewhat different route for the trip out than it did for the trip back - not sure why.

On the return trip, I pulled off the highway near the end and ducked into a Wendy's so my daughter could use the rest room. The Garmin got all freaked out and kept "recalculating" the route. It ended up with a ridiculously convoluted path that would have added 20+ miles to my trip. No problem since I was close to home, but it makes me wonder what would happen had I done that on the way out to an unfamiliar location.
 
ay8306, I have had the same thing happen iften with my Magellan when I have stopped for gas. You would think that since it knows you're at a gas station and only a few hundred feet off the Interstate that you have simply stopped for gas. But, no it goes through this "calculating" routine and sometime need to be shut off and restarted.... :headbang:
"
 
WLH said:
...it goes through this "calculating" routine and sometime need to be shut off and restarted.... :headbang:
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My old one used to do that too, if it got too confused it would turn itself off, great :x
 
My TomTom One does similar... gave me a new route to work once that was actually alot better than the one I had been using. Would it pick that route going home without being forced :headbang: even when going back along that route for ages it just insists I should 'turn around when possible', 2 miles down the road it works out where I am and is happy again :)
 
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