Size & capacity data · honestly scoped

Vehicle size data — only what we really have.

Real boat length, beam & weight; EPA interior passenger & cargo volume on cars; computed tire overall diameter & section width; plus doors and body class — served as clean JSON, addressed by UUID.

We do NOT have car exterior length, width, height or wheelbase. If you need car L×W×H, this dataset is not it — and we'd rather tell you up front.
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api.vehdb.com
# Boats: real exterior dimensions
GET /v1/boats/{uuid}
  "length_ft": 24.5, "beam_ft": 8.5, "weight_lb": 4200
# Cars: EPA interior volume + body
GET /v1/cars/{uuid}
  "passenger_volume_cuft": 103, "cargo_volume_cuft": 39,
  "doors": 4, "body": "SUV",
  "length_in": null // not provided
# Tires: computed geometry
GET /v1/tire-sizes/{uuid}/geometry → Ø 29.0in

Exactly what's in — and what's out

No vague "comprehensive dimensions" claim. Here's the honest scope.

Size & capacity we do serve

  • Boats: overall length, beam (width) & weight — real exterior dimensions
  • Cars: EPA interior passenger & cargo volume
  • Tires: computed overall diameter & section width
  • All: doors & body class

Not in this dataset

  • Car exterior length, width & height
  • Car wheelbase
  • Ground clearance, track width, curb-to-curb specs
  • Towing / payload exterior dimension tables

If you need car L×W×H, we'll point you elsewhere rather than overstate ours.

Size fields by vehicle type

What dimensional and capacity fields each endpoint returns.

Type Size / capacity fields Kind
Boats length_ft, beam_ft, weight_lb Real exterior dimensions
Cars passenger_volume_cuft, cargo_volume_cuft, doors, body Interior volume + body class
Tires overall_diameter, section_width, sidewall, revs_per_mile Computed geometry
Motorcycles body / class descriptors Classification only — no exterior L×W×H

Base URL: https://api.vehdb.com/v1

Example response

A boat with real exterior dimensions — the clearest case of true size data.

GET /v1/boats/{uuid} 
{
  "data": {
    "uuid": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "make": "Sea Ray",
    "model": "SDX 250",
    "year": 2026,
    "length_ft": 24.5,
    "beam_ft": 8.5,
    "weight_lb": 4200,
    "hp": 350,
    "fuel_type": "Gasoline"
  }
}

Boats are the one type with measured exterior dimensions — explore the Boats API.

Size data FAQ

Honest answers about what's in our dimension and capacity data.

VehDB provides honestly-scoped size and capacity data: power-boat length, beam and weight (real exterior dimensions); EPA interior passenger and cargo volume on cars; computed tire overall diameter and section width; and doors plus body class. These are the size fields we actually serve.
No. We do not provide car exterior length, width, height or wheelbase. We state this prominently because vehicle dimension datasets are often assumed to include exterior car measurements — ours does not. For cars, our size-related data is interior EPA volume (passenger and cargo), doors, body class, and computed tire geometry.
Power boats. The boats dataset includes real exterior dimensions — overall length, beam (width) and weight — sourced as actual measurements. Cars and motorcycles do not carry exterior L×W×H in our data.
Tire geometry is computed: overall diameter and section width are derived from the tire size code, along with sidewall height and revolutions per mile. This is dimensional data about the tire, not the vehicle body.
Yes, for cars. EPA interior passenger volume and cargo volume are available on cars, alongside doors and body class. These are capacity-oriented fields rather than exterior dimensions, which is why we frame this as size & capacity data, honestly scoped.

Related: Boats API, Tire Sizes API, Fuel Economy API, vehicle fitment data.

Size & capacity data, honestly scoped.

Boat length/beam/weight, EPA interior volume on cars, computed tire geometry, doors & body class across 1,342,720 vehicles. No car exterior L×W×H — we say so up front. Free tier: 100 calls/mo, no card.

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