The ecoRoute system, which Garmin has been offering on its sat-navs for a few years, has a few extra features. Once you have input the urban and extra-urban miles-per-gallon figures for your car, plus the current cost of petrol, you can now also record each refuelling stop, giving you a complete picture of petrol usage and your car's real economy. As before, you can challenge yourself to drive as efficiently as possible, with an icon in the map giving you a score out of 100 to indicate how you are currently doing.
There are a few useful extras to be found in the Tools menu. The ‘Where Am I?' function presents your current location, and provides quick access to useful POIs for an emergency. You can track down the nearest hospitals, police stations and petrol pumps, but the roadside assistance is limited to a number for the AA, which won't be so handy if you're with another breakdown cover provider.
The 2460 LT comes with traffic updates enabled as standard. These are the RDS-TMC variety, so arrive via FM radio transmission. The receiver is built into the car power adapter, and you then plug the aerial into this and loop it round your windscreen with suction attachments. A lifetime subscription is provided for updates in the UK and a variety of European countries. The usual event browsing and rerouting functions are available.
The navigational map is essentially the same as previous Garmin sat-navs. Roads are clearly marked, and there's a reasonable amount of information along the bottom about your trip, including the estimated time of arrival and an icon indicating the next turning. One addition here is the PhotoReal Junction View. This is the familiar full-screen graphic most premium sat-navs now offer at complex motorway interchanges, telling you which lane to be in. Except that the image is more realistic than before, and as the 2460 LT has such a large screen, Garmin doesn't actually make it take up the entire screen. Instead, the display is divided in half, with the map remaining on one side and the PhotoReal Junction View on the other side.
Garmin Locate marks your current position when you remove the nuvi 2460 from the cradle, a feature Navigon also offers and very handy if you forget where you parked your car. A Bluetooth transceiver is built in, so you can pair your mobile phone with the 2460 LT and use it as a hands-free kit.
The Garmin nuvi 2460 LT doesn't have the physical design advantages of the 3790T. But it does offer a solid sat-nav specification. It has plenty of features, a 5in screen, and European maps for just over £200, making for great value, and the voice control system is the best on the market. So if you're after a full specification with a little bit more display real estate, it's well worth considering.