TomTom has announced a new competition, offering winners a chance to nab free maps, TomTom devices and a trip to Amsterdam.

The international online campaign is called Change Spotting and is running in 16 European countries.

Users of TomTom navigation devices can submit map improvements via its Map Share facility, with the chance of winning a number of prizes, including a trip to TomTom's home city, Amsterdam.

Any TomTom device owner who submits a correction via Map Share between now and 23 September stands a chance of winning one of several weekly prizes: these include new map downloads and TomTom GO 930 car navigation devices.

And if you don't own a TomTom device as yet, the company is also running a deal with Eurotunnel.

Free one-day or overnight trip with Eurotunnel are being included with special TomTom ONE Europe packs, which are on shelves now.

The TomTom ONE Travel, a specially boxed version of the TomTom ONE Europe, will include a voucher for a free one day or overnight trip with Eurotunnel for one car worth £79, with travel valid until March 2009.