XTZ, 5 years, 25000 miles and not a single blown a bulb.

I never use the headlamp flasher though, not once in fact. Quick flashes, where the filament doesn't get a chance to reach full heat can seriously shorten a halogen bulb's lifespan. As does a lot on on/off use if you do a lot of stuff on busier country roads where you're forever switching from main to dip. Not a problem here in Norfolk; main beam all the time as there is no traffic at night - the horses all get put out to pasture!

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