Since 06-09 Prius owners w/HIDs were included in Toyota Prius HID Headlight Class Action Settlement - Consumer Class Action Attorneys - Girard Gibbs LLP, I'm curious about how long the HIDs in 04-05 Priuses typically lasted? Model years 06-09 went to Philips D4R, which I later found out are mercury-free, while the D2R bulbs in the 04-05 models are not. Maybe Toyota did this as part of RoHS or something... My passenger side D4R on my 06 started going out a few months and ~800 miles after the 5 year/50K mile warranty that we got as a result of the class action suit. Skimming some earlier threads, I've heard of some folks past 110K miles on their 04 or 05 HIDs... IIRC, one guy said he had trouble at ~88K miles or so... If yours burned out "early", did you use them as daytime running lights or cycle them a lot?