Insurance adjusters and defense lawyers love throwing around this label because it sounds ugly, reckless, and almost impossible to defend. They use it to paint someone as wildly drunk, push blame hard, and pressure the other side into a bad deal. What it actually means is a heightened drunk-driving category used in some states for a very high blood alcohol concentration - often well above the standard legal limit. It is not just ordinary DUI with meaner wording; where it exists, it usually triggers tougher penalties.

Here is the catch in Hawaii: "extreme DUI" is not the name of a separate offense under Hawaii's impaired-driving law. Hawaii prosecutes Operating a Vehicle Under the Influence of an Intoxicant (OVUII) under Hawaii Revised Statutes §291E, and the basic per se limit is 0.08 BAC. So if somebody in a Hawaii case starts using "extreme DUI," that may be shorthand, scare language, or a reference to another state's law - not the actual Hawaii charge.

That matters in an injury claim because loaded language can distort settlement value and fault arguments. A very high BAC can still be powerful evidence of negligence, punitive damages arguments, or criminal exposure, especially after a crash on dangerous roads like the Hana Highway or in low-visibility vog conditions on the Big Island. But in Hawaii, the real legal question is usually the OVUII charge, the evidence, and how intoxication affected liability and damages.