English to German, Dutch and French

We are designing a specific web page to help car dealers enter repair details and need to translate all of the english fields , in all there are 1,600 phrases and the average phrase is a few words, so for example we need "Chassis Number (VIN) translated as a phrase or another example is "Engine Size/Capacity"

In all there are 1,600 lines of text most of which are one word like "name" "address"" etc, but some are longer paragrahs of 15 words, on average however the average line of text is three words