Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Volume not loud enough

I loved everything about this unit. It was super-easy to use. Quickly responsive. Provided street names. Had all the features one could want. But we regretfully had to return it after one short trip. We soon discovered that when traveling at a faster speed on the open road, the volume, even at maximum, could not be heard over the normal road noise in a Honda Accord. If you're alone in your vehicle, no music and just in-town traveling, it would be ideal.