Naira Autos is a growing library of free, no-signup tools and calculators built around the specific questions car owners actually search for — what wiper blades fit my car, how much will import duty cost, what does this OBD-II code mean, is this VIN legitimate. Those questions look the same whether you're asking from Lagos, London, or Los Angeles, so most of what we build is designed to work the same way regardless of where you're driving, with guides that explain the "why" behind each number rather than just handing one back.

Broadly, the tools cluster into a few groups. AI-powered tools like the AI Mechanic and AI Document Generator interpret symptoms and answer open-ended questions a fixed calculator can't. Calculators handle arithmetic that's easy to get wrong by hand — fuel cost and economy, loan repayments, import duty, registration fees — turning assumptions into a number you can budget against. Research & lookup tools — VIN checkers, the OBD-II code database, wiper blade and headlight bulb finders — exist for the moment you already have a car in front of you and need a fast, specific answer. This isn't a fixed list; we're adding new tools to the site regularly, and where a tool depends on rules or pricing specific to one country, we say so clearly rather than let you assume it applies everywhere.

That last point matters because the site is built to keep expanding rather than sit still. New tools go up most months, and the direction we're building in is global by default — a converter, a lookup, or a calculator gets built to work the same way no matter which country you're driving in unless the underlying rule genuinely is country-specific, like a customs duty rate or a registration fee schedule. So if a particular question you have isn't covered yet, it's worth checking back — the library you see today is a snapshot, not the finished product.

Everything here is free to use, with no account, paywall, or email capture required to get an answer. We keep the lights on through ads and our car marketplace, not by charging for tools — if you find one useful, the best way to support it is to come back and use another one, or to point someone else at it who's asking the same question you were.

We're also upfront about where the data behind each tool comes from and its limits. Reference figures like wiper blade lengths, headlight bulb codes, and OBD-II fault descriptions are drawn from widely documented manufacturer and industry standards for the common trim of each generation — genuinely useful as a starting point, but not a substitute for reading the code printed on your own bulb or measuring your own blade before you order a replacement, since higher trims and regional variants sometimes differ. Where a figure depends on something that changes often, like fuel prices or duty rates, we try to note that clearly in the tool itself rather than let a stale number sit unlabeled on the page.