02Electra
I think I can safely say the EFI on the RE has been very reliable.
I can only think of a few problems that I've read of here on the RE Forum over the past 2 1/2 years I've been here.
A couple cases of the crankshaft sensor bolts coming loose and a few people who accidentally broke off the fuel pump outlet.
I have over 12,000 miles on my 2011 G5 and I know Singhg5 has over 26,000 on his 2009. There are quite a few more that have mileage in this range with no EFI problems.
As you may know, the EFI system is built by one of the more reliable makers of these in Japan and they are proving to be Bullet-proof.