The driver's door on my 2000 V70 XC would not open from inside or outside. Upon investigating I found that the latch mechanism failure is quite common. A pin on the metal paw in the mechanism breaks and jams the lock from opening. As described by others the seat must be moved down and back to get en...

Have you checked the fuel pump relay. The two capacitors in the relay go bad after about 175,000 miles and result in the symptoms you describe. Can you hear the fuel pump buss for a couple seconds when you turn the key to verify it is getting current from the fuel pump relay?