750 not good at map and routing accuracy
581761
I have used my Garmin 750 for more than 2 years. A few serious issues: 1. map not accurate. When myfriend and I were nMontreal and Quebec city, 750 led me and my friends onto highway which do NOT exist! We had to turn to other exits and almostgot lost and wasted a lot of time to get back to the highway again. 2. position calculation not accurate. There were a few times I was on the highway, but 750 showed I was off about 30 meters away and always prompted me to be back to the highway. I had to turn it off to avoid the annoying voice.
902878
This GPS has a lot of nice features.  The text to speech is very good and the screen is sharp and easily visable in all lighting conditions.  The interface is not really intuitive and the user manual is poorly organized and difficult to decipher.  The realy weak point of this unit is the mapping software.  There are many errors:  Streets misnamed.  Streets that do exist are not shown and streets that don't exist (and never did) are shown.  When I type in my address the unit takes me a mile and a quarter from where I live.  Same thing for my work address.  POIs are very limited, although you can downlaod others from the web.  There are no map updates available from MIO!  I called tech support because the C230 does not adjust for Daylight Savings Time when in "Route To" mode.  It shows arrival at destination an hour before departure.  Tech support was very quick and friendly, but they told me, although they were aware of the error, they had no way to fix it.  If I had it to do over I would not purchase this unit. I wish I still had my Garmin Street Pilot.
449193
Good performance, poor in gas consumption. Quality trimming is OK.  Update the GPS map in the 2012 model is impossible!!! - It is necessary to replace Uconnect component!!!. Taking 7 people, there is a very, very small space for luggage.
3760136
I upgraded from SA6.  Not so thrilled by this XPish interface.

I bought the Microsoft product a year earlier, that one had my home 1 mile up the road.

Neither product has the 131 freeway from Cadillac Mi, to the Manistee bridge shown.

I've had Delorme Gazzeters for years (large format 1"=1 mile or so maps)  If anyone has a chance to make a decent mapping program it is them.

Wes
4937283
Auto routing yes. Universal single use mapping trails great, except Garmin chose brown elevation lines and brown city roads. In parts of San Francisco distinguishing streets from a high fill of elevation lines is not that feasible. As far as preparing to write to a Micro SD card a "Core 2 Duo 6300" took 6 hours to prepare a single 8 min write. "Quad Core 9550" more than 4 hours. More than twice the estimated displayed. Also firmware update for Etrex and 60CSX allowing a 4 gig card, not quite enough capacity for CA NA OR WA 24K. I made a special card part City Navigator NT part Topo 24k. City Navigator NT disables elevation lines when active.  California is two map files on NT (from map, hit menu, select setup map, check or uncheck NT map for your city needs). Topo 24K is a separate map file for a zillion USGS Quad maps. By the way, even the older City Navigator maps cover some roads in Death Vally that require experienced 4WD operators (Stripped Butte Valley Rd).
1348115
Nice unit but I could not get the mapping to download. In all fairness, I don't know if it was my inexperience or a problem with my computer or the GPS unit. I sent it back. Amazon refunded my money with no fuss. I wound up buying a Magellan Explorist 300. I really like it. This was a better choice for my use hunting and hiking. No worry about downloads or expensive maps.
1729822
I purchased the LN740 for my wife about a year ago, and we've been generally pleased with the features and performance, particularly given the low cost - that is, until I tried to update the installed maps.
When I took a trip to Pennsylvania last week, I found that the unit was directing me to exits, and would then "lose" the roadway, makeing it look as though we were driving off the road, as the highway system had been recently modified.
Figuring it was time to update the map info for the unit, I contacted LG for info on how to update, expecting that they'd provide me with a web link to download updated maps. Instead, they e-mailed me a phone number to call, whereupon I was told that the only way to update the maps was to purchase a CD for $99!
If you feel that kind of price for an update is warranted for a $200 navigation system, then I won't try to disuade you from purchasing an LN740. The next time that I'm looking for a portable nav system, though, the cost and ease of updating maps will be one of the first things that I look at, and it's doubtful that LG will be one of the brands I look at.
1247379
I once owned an expensive Garmin that cost several hundred dollars and was reasonably satisfied with it. I gave it away when I got my iPhone 4 since I could navigate using it. Well over time I have become annoyed by the weak GPS performance of my iPhone and wished it had the accuracy of my old Garmin. So with the great reviews for the Garmin Nuvi 50 and the low price I ordered one and received it today. The following issues are the reason for my returning it:

  I entered the name of a very popular pizza place and the hour glass spun forever with no result. It clearly would
  have killed the battery without ever timing out. No big deal, they can't have every place in their DB.

  Even after updating the maps when I entered the actual address, 914 Main Street, it located 914 W Main Street
  which is a completely different address! There is no way to reject the mistake and get it to show the correct
  address.

  When I want to view a route it is very difficult / impossible to page to see it as it keeps showing addresses and
  it displays 2 choices GO and Save. How about Neither! I don't want to Go or Save I want it to stop offering
  that! I don't see anywhere to turn that mess off.

  The final straw was after the initial GPS synch it is supposed to be very accurate, but after turning it off and
  on it showed 75% signal strength but it located me about 1/4 mile from where I was! Accuracy was the whole
  reason for getting a dedicated GPS device again in the first place!

I wanted to like the Nuvi 50 but I will take navigating with my iPhone over this mess any day!
4230132
The traffic feature on the Garmin has only worked a couple of times, and then it was old data. I was stopped in traffic for over 30 minutes and the Garmin still showed green - NO TRAFFIC. I bought it mainly for the traffic.  After talking to customer service, I thought maybe they would offer to exchange the unit.  Instead, Garmin told me the software patch would fix the traffic feature.  The traffic feature still does not work after installing the patch several times.  Garmin has since discontinued the 265WT, however they should have recalled all the old units and replaced them with a unit that worked.  I will not trust Garmin again. The 265WT unit also directed me to turn the wrong way onto a one-way street in Denver.  It could have been a disaster if I had not been familiar with the area.
2998943
I can only get it to work half the time, did good from Reno to La

worked good from Reno to LA, to Santa Anna but not to Lake Havasue and to Reno so used map's.
4784047
doesnt get better then Mikrotik Routerboards with RouterOS  -  if you know what you are doing.
4806301
It is very slow connecting to satellite even outdoors.
Otherwise it is quite reliable. Lane sketch quite early and speed limit. Speed limit nott always up to date but that is not a problem.
3499563
Took 8 1/2 hours with my internet speed to download the 2 map updates then it STILL didn't give me the right directions !  Called Garmin they said to download another update, that took 3 hours. Garmin needs to look into why this GPS is giving out the wrong way to go. It tells you to take a route that isn't even there !
3777386
If you owned a Tom Tom and decided to buy the new Garmin nuvi 52LM because all the reviews say its the best this year. Don't believe it. I just got back from Minnesota and my Garmin I just bought is terrible on address. Northern Minn. on hi-way 200 the address are a 1/4 mile long. Addresses in Mn. that were on left, Garmin stated on right 80% of time. It also happened in California. And I got home I had to go to Phoenix. The address is 17612 N 59th Ave, I ended up 1/4 mile long and on the wrong side of the street. Also my home address is on the wrong side of the street. Garmin still has big address problems
73121
I previously used Delorme's mapping software but found it confounding.  I had to fight with Delorme to get it to take what I thought was the best route.  Large areas of the map had to be blocked to prevent the software from taking me on a less efficient route.  When I used Streets & Trips, it took me on the route I thought best on the first attempt.  Very impressive.
3741886
I bought the Garmin 2455 LMT a few weeks ago to replace a Garmin 285 WT that I had been using for the past 2+ years.  The one feature I didn't like about the 285 was the routing engine.  When going from point A to point B with the fastest routing option selected, the Garmin 285 almost always would seek out and navigate me through the most congested city streets, streets often with the most stop signs and/or traffic lights.  These city routes may have been shorter than alternate highway routes, but having to constantly stop and go and stop and go, they rarely got me to my destination in the fastest time possible.  Fed up, I bought the 2455 hoping that with its new 2.0 navigation engine, the overall routing would improve.  Unfortunately, it didn't.  Still the same old routing inefficiencies...  I returned the 2455 and purchased a TomTom GO 2435.  While the Garmin, in my opinion, has a nicer visual display and a more intuitive menu system than the TomTom, the routing choices on the TomTom, at least where I live in the Washington D.C. metro area, have been much better at getting me to my destinations in the fastest times possible, which is what's most important to me in a GPS. Until Garmin fixes these navigation issues, I'll continue to purchase my GPSs elsewhere.
1915804
I was contemplating buying one of these.  However, when traveling from King of Prussia, PA to Oaks, PA.. two sizeable towns outside Philadelphia.  It could not find OAKS, PA.  If the Garmin or any other GPS is supposed to save time and money, for the amount of money they're asking for... it should be complete!!  I would hold off buying a GPS until they get better.