Formerly the ONE XL, TomTom has slightly re-branded its entry-level widescreen GPS unit. The XL remains almost identical to the ONE (4th Edition), with the exception of the 4.3in widescreen display. Like its little brother, it also features an ultra-compact design and an all-new EasyPort mount, and it offers access to exclusive TomTom functions like MapShare and the TomTom HOME service.

Despite the inclusion of a much larger display than the ONE (4th Edition), the XL remains a compact unit. It will fit into most pockets and can be easily stored in a glove box compartment or the centre console in most vehicles. TomTom has a clear focus on portability with its entry-level models, and the XL once again fits the bill — it's ideal for those who have multiple vehicles.

The new EasyPort window mount can be left attached to the unit and folded flat after use, meaning the XL is easy to pocket or store with the mount still attached. The circular lock makes it easy to mount to your car window, and you can tilt the unit in multiple directions.

The XL interface is largely similar to previous ONE models. It has clearly labelled and colourful icons and is easy to use. When adjusting certain preferences or settings and saving them, the screen goes back to the map display. This is annoying as you have to navigate all the way through the menu again should you wish to alter any other options.

The XL filters street names by suburbs, narrowing down your search results to a manageable number. The navigational experience remains superb, with highly detailed maps, clear voice instructions and quick rerouting times. The XL also performs excellently in obtaining and maintaining a clear GPS signal (even with an obscured view of the sky). It generally took less than half a minute to get up and running after switching the unit on.

Most of the XL's operations can be accessed via the main menu, which is split into two pages. From here you simply tap the "Navigate To..." button. You can further narrow down your search when looking for a specific address, as the XL allows you to navigate to a city centre, specific street and house number, crossing or intersection, or postcode.

The maps on the unit are very detailed and can be zoomed in and out easily. You can also show remaining time, remaining distance, arrival time, current time, street name and speed. The status bar can be set to display either horizontally or vertically — the latter is ideal for the widescreen display of this model. If you happen to miss the last voice instruction, you can tap the left-hand side of the status bar to repeat it.

The XL supports TomTom's new Map Share feature. In addition to corrections and improvements to the maps being uploaded every month by other TomTom users, Map Share allows you to make adjustments to maps through the unit itself. You can add POIs, update roads, edit phone numbers and add new streets. This information can be shared with other TomTom users via the included TomTom HOME software.

TomTom's 'Help Me' safety feature is included. This helps you navigate (either by car or on foot) to a multitude of services such as police stations, hospitals, mechanics, public transport and pharmacies. It even includes first aid, traffic regulation, and repair and maintenance information. In addition, the XL comes preloaded with fixed speed and red-light camera warnings.

Battery life is rated at up to three hours. An AC charger isn't included in the sales package, so you'll have to charge the unit via the USB cable or cigarette lighter adapter.