Anyone can drive your car - but if they pay you to do so, the insurance is invalidated. Futhermore if they crash - the insurance is invalid - and they (the insurance company) would come after you - and not the driver!!
There was a posting from an Englishman, about 5 or 6 months ago. He hired a German van, drove to UK and brought his stuff back to Switzerland. He was in big trouble at the Swiss Basel border as the customs officer warned him he was in serious trouble with smuggling the van. He was given a temporary import certificate, for a fee, and he had to take the van out again within 2 days.
The safest attitude is to stop at the border, show the customs your rental car papers and your passport, and ask for a temporary import certificate. That way you cannot be charged with smuggling the car as you have declared it. I think the certificate costs CHF 20,--
And don't forget, the Swiss Zoll / Douane officers and police can stop you anywhere without reason and ask for your papers, proving your car is legally here.
Searching for 'Mulhouse-Bale Airport France' does seem to give rental prices about half the price compared to the Swiss side!
Now the only question is if I rent the car in my old man's name to avoid any hassle at the boarder, although he is a very nervous driver. Or rent in my name and take the risk... in 7 years and about 800 boarder crossings I've only been stopped once so I think I'll go for the latter.
I just did a search and found something interesting (relevant to UK) is that as expected you cannot drive etc. BUT look at point 3) an exception is made for a Hire Car. Could that be an EU law.
If you are a resident in the UK, you cannot drive a non-UK car in the UK. Since there are no residency cards in the UK, whenever you are stopped by a police officer and he thinks you are actually a resident (for example if you have a UK driving licence, or have UK debit cards in your wallet), then he might confiscate your car which might be destroyed, unless you can prove you are not a UK resident, or you are working in more than one EU countries, and spend more than 6 months (185 days) per year outside of the UK.
If you are not a resident, then you can drive the car for at most 6 months (per year), but your car does need to have valid MOT and Insurance from the originating country, which you have to prove to the officer in case it's needed. You also have to prove to him that you are not driving the car for more than 6 months (for example if you show him the ferry / tunnel ticket). Every day your car is in the country counts, so if you leave the country, but the car is still there, it's still counts towards the 6 months (as your ferry/tunnel ticket is still showing the date). Exiting and re-entering the country won't reset the 6 months (although you will have a fresher ferry/tunnel ticket, so it becomes easier to prove you just arrived to the country)
There are only three possible options for a UK resident to drive a non-UK car completely legally:
1) If the car is not yours, the registered owner is not a UK resident, and he is sitting with you in the car (in this case he is considered to be the driver)
2) If the car belongs to (or to be more precise is registered in the name of) an EU based company, and you are working for that company.
3) If the car is on a lease in an other country (for example it's a car hired from France)
1.) It seems that rental prices have stabilized between the French and Swiss sides at the airport. My 4 day rental for a Volkswagen Polo is 120 CHF from Enterprise, which is similar in price for a comparable car from the French car rental agencies.
2.) I am driving to go skiing in Grindlewald. Will my rental car come with snow chains and the vignette sticker? Or will I need to purchase those separately?
3.) Any tips or discounts for toll roads, gas, etc? Thank you!
Decided to hire a car for my holiday in France from the airport, but left it 'till the day before departure before looking.
Tried my usual company, Europcar, but they were sold out on the Swiss side and the Baselstadt address wanted CHF680 for 8 days hire. No thanks.
Then I tried Enterprise on the French side, they had one, €300 for 8 days, so I called them to double check (this was at 8pm and I wanted to pickup at 9am the next day).
Turns out their booking system is not real time, and despite the website saying they had availability, they actually had no cars available.
So I called Hertz on the French side, they assured me their system was real time, and if I booked online and called back, they'd reserve the car I needed rather than I take pot luck the next day. So I booked online, called them 2 minutes later, and there was my booking on the system, and they reserved me the appropriate car (Pug 308SW).
Cost for 8 days, €220! (The same car from Hertz on the Swiss side was €400). They also don't record damage up to 25mm (dings or scratches).
I asked about driving it into CH, and they said up to 7 days was fine. No idea what the restriction was after this, whether legal or Hertz regs.
All in all, I was very happy with Hertz and the cost.
It sounded like he was just doing his bit for Swiss protectionism (although he didn't pursue the issue -- I just got sent on my way with no penalties).
ETA: OK, now that I've read more posts in this thread plus another thread on the topic, it looks like the border guard may have been correct!