You roll through a green light on St. Francis Drive and a pickup runs the red and puts your car into the median. The other driver walks away. You don’t. The ambulance, the CT scan, and two nights in the hospital run past $30,000 before anyone mentions the six weeks you’ll miss at work.
Then the police report comes back with the line nobody wants to read: the other driver had no insurance. Or the version that feels almost worse. He had insurance, the state minimum, and in New Mexico the state minimum for injuring one person is $25,000.
Roughly one in five drivers in this state is carrying no insurance at all, so this isn’t a rare story. Here’s the coverage that decides how it ends.
What your liability coverage doesn’t do
Your own liability coverage pays for harm you cause to other people. It pays nothing toward your own injuries. Health insurance covers medical bills up to your deductible and out-of-pocket maximum, but not the wages you lost, the pain, or the drive to physical therapy three times a week, and your health plan may expect to be repaid out of any settlement you eventually collect. That gap is what uninsured and underinsured motorist coverage exists to fill.
The two halves
Uninsured motorist coverage steps in when the driver who hit you has no insurance or can’t be found, as in a hit-and-run. Underinsured motorist coverage steps in when they have some, but not enough. Together they act like the liability coverage the other driver should have carried, bought by you, for you and everyone in your car.
The New Mexico math that surprises people
Under New Mexico’s rules, underinsured coverage generally works as a difference, not an addition. The amount available is your underinsured limit minus the other driver’s liability limit.
So if you carry $25,000 in underinsured coverage and the driver who hit you carries the state-minimum $25,000, the math is $25,000 minus $25,000. Zero. The coverage you’ve been paying for does nothing, because it was never larger than the minimum everyone else already has to carry. At $100,000, the same crash leaves $75,000 on top of the other driver’s $25,000. The number next to the coverage matters far more than the checkbox.
What the law makes your carrier do
New Mexico requires insurers to include uninsured and underinsured coverage at limits equal to your liability limits, on each vehicle, with the premium for it spelled out. You can take less or turn it down, but only by signing a rejection. So if your policy shows none, or shows the minimum while your liability limits are higher, someone signed something at some point, possibly years ago to save a few dollars a month. Your declarations page will show which it is.
The other factors
- If you insure more than one vehicle, New Mexico is one of the states where these limits can sometimes be stacked, so two cars at $100,000 may mean $200,000 available, depending on how the policy was written and what was signed.
- The coverage usually follows the people in your car, not just you. That includes your kids and the carpool.
- It often follows you outside the car too, if you’re hit by a driver while walking or on a bike.
- Medical payments coverage is a separate, smaller coverage that pays immediate medical bills regardless of fault, useful while a larger claim gets sorted out.
- Relative to what it does, this tends to be one of the least expensive lines on an auto policy.
The Takeaway
Most people spend their attention on the coverage that protects other people from them. This is the coverage that protects you from other people, and in a state where one in five drivers has none, it’s the part of the policy most likely to matter to you personally. The question isn’t whether you have it. It’s whether the number next to it would hold up on a bad night on St. Francis.
