Apart from Smartphone Link and the features this provides, the Garmin nuvi 3590 LMT has a number of other useful apps included. Alongside the expected multi-waypoint trip planner is a picture viewer, world clock, alarm clock, calculator, unit converter, and a trial of the Oxford University Press language guide. The ecoRoute system lets you input the fuel consumption figures for your car and then track your petrol usage, as well as select routes that minimise this. Last Spot shows you where you previously stopped the car, so you can find your way back to where you left it. You can even find out what the weather is like there. What's more, you can also listen to talking books in Audible format.
Naturally, all the core features are present and correct. However, although Garmin has left its main menu as normal, the Where To? menu has been redesigned. There is now a universal search available here that spans across both the address and points of interest (POI) databases. This is a feature we have liked in Mio Navman devices for some years. Suggestions pop up as you type, too, making this an extremely quick way of finding destinations near you. However, it's not quite as powerful as it at first seems, because whilst the POI search appears to be countrywide, the address search only picks up possibilities in the local vicinity.
Beneath the search can be found six icons to take you to your home location, search for an address, plus POI categories for restaurants, petrol stations and shopping. However, you can entirely customise this menu and put whatever apps you like onscreen, removing any of these icons except the Home one. There are also three immovable menu icons on the right, to take you to POI categories, your list of favourites, and the history of recently found destinations. Overall, it's a pretty user-friendly system. The Garmin nuvi 3590 LMT also has Garmin's brilliant voice command system, which is the most usable we have tested, letting you control the entire process of destination entry without the use of your hands.
Once you have worked out where you want to go, the Garmin nuvi 3590 LMT's map is standard Garmin fare, although the company has branded the process Guidance 3, signifying that routes are calculated using the trafficTrends historical road speed information amongst other improvements. The junction view is split so you can still see the map as well as the realistic image of the road ahead including signage, so you can get in the correct lane. This aspect of the Garmin nuvi 3590 LMT isn't significantly different from before, with clear maps and verbal commands, although the way the speed camera information fills the top strip of the screen is clearer than previous implementations.
The Garmin nuvi 3590 LMT is a high-quality, feature-rich sat-nav. As we've commented before with regard to the Garmin smartphone app and the nuLink 2320, the Live services do get a bit pricey. If you purchased all of them, you would be paying £62.24 a year, which is significantly more than TomTom currently charges for its LIVE services. However, the device does come with lifetime map updates and lifetime RDS-TMC traffic, so you can get traffic information without the enhanced 3D Traffic service. Also, the base unit price of under £230 is quite reasonable for a flagship 5-inch widescreen sat-nav with European maps, making this a sat-nav worthy of consideration.