Design

Aside from a body that is now almost exclusively a shade of matte black and the shiny black speaker grille gracing its derriere, the TomTom One 140 is identical to the fourth-generation One. It looks good, but more importantly its compact size allied with the EasyPort windscreen mount that affixes itself to the unit around the large rear speaker, folds up in a compact bundle, allowing it to all fit in even the shallowest of glove boxes.

Features

Underneath the One 140's emo outfit, you'll find a faster processor and double the amount of memory. These improvements lead to slightly snappier map refreshes, nearly instantaneous response to inputs and faster route calculation — a bonus for when you wander off course. Making a welcome return is Map Share, which allows users to correct various map errors, including traffic direction, turn restrictions, blocked roads and street names. New streets can't be added, but corrections — once verified — can be shared with and downloaded from other TomTom users via the company's Home software.

Performance

Two of the One 140's key selling points are the inclusion of IQ Routes and advanced lane guidance. The latter is a handy feature showing drivers suitable lanes for most multi-lane roads, as well as full-screen lane graphics and signpost information for highway on and off ramps. By collecting anonymous data, IQ Routes is meant to provide better routing by avoiding roads with low average speeds for a particular time of the day.