Sorry, should have posted with a Switzerland tag.

AutoEurope: 800-223-5555

The train is very expensive unless you get some type of pass. But a pass may be worth it. A car rental for less than a week tends to be quite expensive too, but being in Basel, check if French prices are cheaper than Swiss prices; you would pick the car up on the French side of the airport.

I was looking into renting a car in Basel and the least expensive option was taking the train or bus down to Mulhouse, France. It is about 30 km from the BSL airport and there is a rental place very close to the train station in Mulhouse, walkable, at least the Hertz office is. It appears you don't pay the extra fee for picking up a car at a train station. You might have to pay for the sticker to drive in Switzerland but you can try to get a vehicle with a valid sticker.

I have rented from both Hertz and Auto Europe. I like both but I have often found better prices from Hertz with my AAA membership (inexpensive to sign up for it).

the least expensive option was taking the train or bus down to Mulhouse, France.

Taking into account the cost of the bus fare, 15€ per person as I remember? I had considered it when picking a car up in Basel but decided that the cost would pretty much even out the 30+€ for the airport pick-up.

Hmmm. Any ideas for how to figure out train fare to get from airport to an address in Basel?

http://www.bvb.ch/en/timetable-network/haltestellenfahrplan?50

http://www.euroairport.com/en/passengers/access/train.html

There is a city bus that goes from the airport to the central train station. From there one would take the streetcar to almost any address in Basel.