Public API — free JSON endpoints

Torque specifications. Returns brands, components and the filtered list of specs.

{ "brands": [...], "components": [...], "specs": [...] }

Search OBD-II codes by exact code or keyword. Returns up to 25 matching codes.

[ { "code": "P0300", "meaning": "...", "system": "..." } ]

Fetch a single OBD-II code with causes, symptoms, checks and tools.

{ "code": "P0300", "causes": [...], "symptoms": [...], "checks": [...], "tools": [...] }

Random set of 10 quiz questions with options, answer index and explanation.

{ "questions": [ { "q": "...", "options": [...], "answer": 0, "explanation": "..." } ] }

List of car brands with oil-change specifications.

[ "Renault", "BMW", ... ]

Oil-change specifications filtered by brand and/or model.

[ { "brand": "Renault", "model": "Clio", "oil_qty_l": 4.3, "viscosity": "5W-30", ... } ]

Fetch an encyclopedia article: function, symptoms, diagnosis and maintenance.

{ "slug": "alternator", "function": [...], "symptoms": [...], ... }

Search the vehicle catalogue. Free text matches manufacturer, model, trim, engine code and year; the other parameters filter. Results carry the public URL for each vehicle.

{ "data": [ { "make": "BMW", "model": "3 Series", "year": 2019, "trim": "320d", "engine_code": "B47D20", "url": "/vehicle-information/bmw/3-series/2019/320d" } ], "meta": { "total": 1, "min_query_length": 2 } }

One step of the manufacturer to engine cascade. Only options that lead to a page with data are returned, so an option is never offered when the next step cannot be resolved.

{ "step": "engines", "data": [ { "value": "b47d20", "label": "B47D20", "hint": "2.0 L · 4 cyl · Diesel" } ], "count": 1, "availability": { "engine": true } }

Full report for one vehicle: identification, engine, every section that holds data, its sources and verification states, internal links and related vehicles. Sections with nothing on record are omitted rather than returned empty.

{ "data": { "vehicle": {...}, "engine": {...}, "completeness": 70, "is_indexable": true, "sections": { "engine": {...}, "oil": {...}, "maintenance": {...} }, "disclaimer": {...}, "links": {...} } }

Engine section only: code, displacement, cylinders, output, torque, emission standard and any additional normalised engine facts.

{ "available": true, "data": { "title": "Engine", "items": {...}, "sources": [...] } }

Engine oil and other fluids for this exact engine code. The SAE grade and the manufacturer approval are separate fields, never merged.

{ "available": true, "data": { "items": { "oils": [ { "viscosity": "0W-30", "manufacturer_spec": "BMW Longlife-04", "capacity_l": 5.5, "spec_is_sourced": true } ], "fluids": [] } } }

Maintenance schedule per service item. Each interval states its basis: manufacturer recommendation, source data, or general workshop guidance.

{ "available": true, "data": { "items": [ { "slug": "engine_oil", "name": "Engine oil", "interval_km": 15000, "interval_months": null, "basis": "guidance_generic", "is_guidance": true, "source": "..." } ] } }

Tire and wheel data per position, with pressures in bar. A section with nothing on record answers available:false rather than an error.

{ "available": false, "message": "This information is not on record for this exact engine version yet." }

Body, weight and capacity figures. Stored in metric units; convert on your side or use the page unit switch.

{ "available": true, "data": { "items": [ { "key": "length", "label": "Length", "value": "4709", "unit": "mm" } ] } }

Output, acceleration, top speed, fuel consumption in L/100 km and CO₂ in g/km. Figures describing the engine rather than a measured test of the trim are flagged engine_level.

{ "available": true, "data": { "items": [ { "key": "power_hp", "label": "Power (hp)", "value": 190, "engine_level": true } ] } }

Consumables and replacement parts with part numbers, but only where the number comes from a named source.

{ "available": true, "data": { "items": [ { "category": "oil_filter", "part_number": "BMW 11428583899 / MANN HU816x", "source": "..." } ] } }

Decode a VIN. Validation always happens locally first: a malformed VIN returns 422 with a readable message. A well-formed VIN that no provider could decode still returns 200 with the locally computed ISO 3779 structure and decoded:false. Identification only: this endpoint never returns oil, maintenance, tire or part data.

{ "vin": "1HGCM82633A004352", "valid_format": true, "region": "North America", "wmi": "1HG", "vis": "3A004352", "check_digit_ok": true, "decoded": true, "make": "HONDA", "model": "Accord", "year": "2003", "engine": { "displacement_l": 3 }, "source": "nhtsa-vpic" }