Thanks, I know I made a mistake, but all the cars I knew on that list were Electric. Because currently we only look at electric for our next car.
So I think it's a mistake that's easy to make.

Next year it will be illegal to sell any kind of ICE car in Norway, including hybrid / plugin hybrid. So at least Norway doesn't agree.
Also we have made tests in Denmark, that shows that Hybrid does not come even close to live up to the promises of car makers, that were the basis for tax deductions.
I understand the advantage of Hybrid, combining electric and long range at lower cost, but they are not the same as a fully electric car, and shouldn't share those tax advantages.

There should still be some measure of the incentives (and penalties) associated with EVs.

I suppose the easy solution would be to increase tax on gas, and lower it on electricity. That would also be the most fair IMO, but apparently people don't want that?
But that would make the hybrid more beneficial according to the gas savings. IDK maybe that somehow isn't entirely fair either?

We’re averaging around 120mpg over the life of the vehicle,

Wow, that's actually quite good. Congrats.

They are more efficient than pure ICE vehicles though in most situations.

Yes absolutely, I'm not saying self charging doesn't have merit, it's just not an electric, but only a more economic ICE car.

tax incentives should apply

Yes, but as an ICE car, not as an electric, I think most countries have this by now, that cars are taxed lower if their mileage is better. But for electric it's even lower, because they drive on partially renewable energy from the power grid, and they don't pollute in cities. Those factors don't apply for Hybrid cars.

Many people with plugin hybrids only add gas a few times per year.

Yes and that's the basis for their tax rebates here, but the research shows that the level of gas used for hybrids is way higher than manufacturers promised. People generally buy hybrid because they have recurring situations where they need the extended range the gas provides. So in general a hybrid is driven quite a lot on gas. If you don't have that need, you might as well buy an electric. Ergo Hybrids should at most receive half the tax rebate IMO. And they should never be counted as electric, because they are not.