From vehicle details to useful questions
No account · No API key
Eight Japan-market profiles connect to seven source-reviewed entries. Six workflows cover buying, symptoms, recall records, maintenance, estimates and listings. Other vehicles can use a general brief. Inputs stay in the page; you choose what to copy.
Start with N-BOX → · What we test and what remains unmeasured · Request your vehicle
See the data, then investigate
Reproducible mock demoThe skills provide the investigation workflow. The companion obd2-mcp server supplies diagnostic data. Try its included MCP client with Git and Node.js — no vehicle, adapter or AI subscription required.
Selected output captured on 2026-10-29 from simulated data. This demonstrates tool responses, not an AI diagnosis or a real-vehicle test.
Operating procedure
3 stepsPick a skill
Warning light → OBD-II. Strange noise → Troubleshooting. Known repair → Mechanic Assistant. The index below routes you.
Give the vehicle context
Year, make, model, engine, mileage, conditions. Each skill tells you exactly what to gather — that context is what separates generic answers from useful ones.
Iterate, then verify
Run the cheapest discriminating test, report back, narrow down. Confirm the diagnosis before buying parts, and check specs against the factory manual.
Skill index
SEC 01–20 · EN/JA all · ES coreMechanic Assistant
Repair procedures, torque spec guidance, tools, system explanations.
EN · JA · ES SEC 02 · 🔌OBD-II Diagnostics
Trouble codes, freeze frame, live data — fix the fault, not the code.
EN · JA · ES SEC 03 · 📅Maintenance Planner
Personalized schedules, severe-service adjustments, catch-up plans.
EN · JA · ES SEC 04 · 🔍Used Car Inspector
Model-specific checklists, red flags, negotiation math.
EN · JA · ES SEC 05 · 🩺Troubleshooting
Symptom-first diagnosis: noises, vibrations, smells, leaks, lights.
EN · JA SEC 06 · 🏁Customization Advisor
Build plans, fitment math, correct mod order, legality flags.
EN · JA SEC 07 · ⚡EV Assistant
Charging strategy, battery health, range, EV-specific maintenance.
EN · JA SEC 08 · 🏍️Motorcycle Mechanic
Chains, carbs and EFI, valve clearances, suspension setup.
EN · JA SEC 09 · 🛢️Diesel Specialist
Common rail, DPF/EGR/SCR aftertreatment, glow plugs, turbos.
EN · JA SEC 10 · 🕰️Classic Car Restorer
Points, carburetors, rust judgment, obsolete parts sourcing.
EN · JA SEC 11 · 🚛Fleet Manager
Staggered scheduling, cost-per-km tracking, repair-vs-replace.
EN · JA SEC 12 · 🛞Tire & Wheel Advisor
Sizing math, fitment, seasonal strategy, wear-pattern diagnosis.
EN · JA SEC 13 · 🚚Commercial & Truck
Air brakes, pre-trip inspection, load securing, weight awareness.
EN · JA SEC 14 · 🎨Body & Paint
Dent and scratch assessment, repair paths, honest DIY limits.
EN · JA SEC 15 · 🪝Towing & Trailer
Hitches, tongue weight, trailer wiring and brakes, sway prevention.
EN · JA SEC 16 · 🔊Car Audio & Electronics
Head units, amps, dash cams, 12V wiring discipline, CAN limits.
EN · JA SEC 17 · 📝Service Intake Assistant
Turn customer symptoms into an evidence-labeled intake note, focused follow-up questions, and a technician handoff.
EN · JA SEC 18 · 🧾Repair Estimate Reviewer
Compare repair estimates by scope, diagnostic evidence, parts, labor, arithmetic, and questions to resolve before authorization.
EN · JA SEC 19 · 🏷️Used Car Listing Assistant
Draft used-vehicle listings from documented specifications, condition disclosures, and an explicit price breakdown without unsupported claims.
EN · JA SEC 20 · 📣Vehicle Recall Checker
Guide official recall lookups, separate model-level notices from vehicle applicability, and document completion evidence or unknown status.
EN · JAReference library
Known-issue bulletins
- BMW N20 timing chain guides — critical
- Toyota 2AZ-FE oil consumption — major
- Subaru EJ25 head gaskets — major
- Honda i-DCD DCT judder — major · JP focus
- Full database + contribution template →
Japan-market model checks
Official notice scopes, completion records, and buyer questions. Full index: 17 bilingual entries.
Illustrative conversations
Teaching scenarios; repair costs and outcomes are illustrative.
Build with it
- Claude Project template — one-skill assistant
- Garage Assistant system prompt — all 20 routed
- Skill authoring guide — contribute a skill
- llms.txt — documentation index
Help improve the next version
Maintained by Sho KamakuraReport a confusing instruction, share a reproducible demo issue, or contribute a translation. Useful feedback helps decide what to improve next.