At least one US state enacts a mandatory road usage per-mile tax on all electric passenger vehicles before 2030.
Declining gas tax revenues have led state legislatures to test vehicle-miles-traveled fees. This resolves as true if a mandatory per-mile fee applies to all in-state EV registrations.
Across 6 frontier models answering independently, the panel leans no: the median is 36%.
They do not agree: GPT puts it at 78% and DeepSeek at 12%, 66 points apart. A spread that wide usually means the question turns on something none of them can see yet.
Nothing is settled until 7 Nov 2031, when the outcome is checked against sources and every number above gets a permanent score.
What each one said
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GPTOpenAI
The outcome hinges on whether a current VMT pilot state converts its EV program into a universal enrollment mandate.
- Oregon, Utah and Hawaii have run road-user-charge programs, but most still use voluntary opt-in or flat EV fees.
- A legislature and governor need only act once before November 2031; fiscal pressure grows as EV fleets expand and fuel-tax receipts erode.
- I would lower this sharply if states instead broadly adopt higher flat annual EV fees, avoiding privacy and implementation backlash.
78% -
GeminiGoogle
Enactment requires overcoming voter hostility to vehicle tracking and the ease of simply raising annual flat registration surcharges.
- Over 30 states already use flat annual EV registration fees ($100-$225), which solve the revenue hole without privacy blowback.
- Oregon, Utah, and Hawaii have active pilot or voluntary RUC frameworks, but all allow opt-outs to flat registration fees.
- Enacting a mandatory mandate requires state DOTs to deploy universal odometer reporting, which faces stiff legislative resistance.
42% -
QwenAlibaba
Utah's existing per-mile framework is the closest to mandatory-for-all, but no state has crossed from optional to compulsory.
- Utah's 2021 HB 153 created per-mile fee infrastructure for EVs but kept it as an alternative to flat fees, not a universal mandate—upgrading to mandatory requires a new…
- Over 30 states already impose flat EV registration surcharges, showing political will to recover lost gas tax revenue, but per-mile mandates face privacy and…
- A single state legislature acting in a 2027–2029 session could do this, but base rate of states converting pilot programs to universal mandates within one session is…
38% -
ClaudeAnthropic
Depends on whether a state converts its existing voluntary EV mileage pilot into a mandatory statewide per-mile fee by 2030.
- States like Utah, Virginia, Oregon, Hawaii run voluntary RUC/EV fee programs but none has gone fully mandatory per-mile for all EVs yet.
- Flat annual EV registration surcharges remain the dominant policy in ~30 states, showing legislative preference for simplicity over true per-mile metering.
- A state like Utah or Hawaii converting its pilot to mandatory mileage-based fees, or federal IIJA pilot results pushing adoption, would raise this significantly.
34% -
GrokxAI
Turns on a legislature converting EV flat fees to mandatory odometer VMT by end-2029.
- OR/UT/VA already run opt-in RUC; making it mandatory for every EV registration requires new 2027-29 bills that survive privacy and equity fights.
- No state has ever imposed statewide mandatory per-mile fees on any vehicle class; all existing programs remain voluntary, so the base rate is near zero.
- A federal highway reauthorization that conditions funds on VMT or a court striking down high EV registration fees would most raise the odds.
22% -
DeepSeekDeepSeek
No state has passed a mandatory per-mile EV tax yet; it would need to survive EV-owner pushback and legislative calendars before 2031.
- Utah's 2023 RUC hits alternatives and plug-ins, not EVs; no state applies a mandatory VMT fee to all EVs as of 2026.
- Oregon's OReGO and pilots in Virginia, Washington, and Colorado remain voluntary, so statewide mandates with compliance mechanisms do not yet exist.
- Some states are shifting to flat EV fees instead; the trigger event requires a legislative repeal of voluntary options before 2031, which would be the clearest signal of…
12%
6 of 6 models answered · 66 points between the highest and lowest. None was shown the market price.
Question sourced from a news sweep on 8 Nov 2026. Forecast by google/gemini-3.8-flash, anthropic/claude-sonnet-5, openai/gpt-5.6-terra, x-ai/grok-4.6, deepseek/deepseek-v4.1-flash, qwen/qwen3.8-max-0902 via OpenRouter.