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Brompton Electric G-Line G4 E-Bike Faltrad 20" orange

zweirad-stadler:brompton-electric-g-line-g4-e-bike-faltrad-20-orange · source URL · confidence 0.58

Eligibility

Cannot win: confidence 0.58 below 0.75; e-bike bikes are not value-ranked yet (no e-bike-specific equipment model)

Size decisions

A shopper asking for: 54 → nothing compatible · 56 → nothing compatible · 58 → nothing compatible · 60 → nothing compatible

Identity

Canonical configuration: Brompton | Electric G-Line G4 E-Bike Faltrad 20"
Confidence: medium

• brand exact (Brompton)
• model normalized to "electric g line g4 e faltrad 20"
• groupset family unidentified on every listing
• model year unavailable on every listing
• 2 listings across 1 retailer
• downgraded to medium: no shared GTIN, and no listing states a model year

Provenance — why we believe each fact

Warnings

• info single-size-only — Only one size is in stock (S).
• high groupset-unknown — Groupset could not be established.
• info wheel-material-unknown — Wheel material could not be established.

Score breakdown

{
  "frameScore": 13,
  "drivetrainScore": 0,
  "wheelScore": 5,
  "extrasScore": 0,
  "suspensionScore": 2,
  "weightAdjustment": -3,
  "equipmentValue": 17,
  "notes": [
    "Groupset not identified: 0 drivetrain points.",
    "Wheels unknown: scored level with basic aluminium, which is neither a reward for omitting the wheelset nor a penalty for naming a cheap one.",
    "Brakes \"hydraulic-disc\" = 0, the baseline for mtb-hardtail.",
    "18.5 kg vs 14.4 kg mtb-hardtail reference = -3.",
    "Fork \"rigid\" +2 (0 mm travel, which is not scored)."
  ],
  "marketPrice": null,
  "valueScore": null,
  "savingsVsMarket": null
}

AI normalization

{
  "requested": [
    "frameMaterial",
    "groupsetFamily",
    "wheelMaterial",
    "wheelTier"
  ],
  "applied": [
    "frameMaterial"
  ],
  "rejected": [],
  "notes": "The source names a Brompton 4-speed hub gear system, but Brompton is not a permitted groupset brand or family in the vocabulary. Wheel material and wheel tier are not established; only 20-inch rims/wheels are mentioned. Weight is specified for the small size.",
  "raw": {
    "frameMaterial": {
      "value": "steel",
      "evidence": "Handgelöteter Stahlrahmen",
      "confidence": 1
    },
    "groupsetBrand": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "groupsetFamily": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "electronicShifting": {
      "value": null,
      "evidence": null,
      "confidence": 0.95
    },
    "speeds": {
      "value": "4",
      "evidence": "Gänge: 4-Gang",
      "confidence": 1
    },
    "mixedGroupset": {
      "value": null,
      "evidence": null,
      "confidence": 0.95
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "brakes": {
      "value": "hydraulic-disc",
      "evidence": "Hydraulische Scheibenbremsen",
      "confidence": 1
    },
    "weightKg": {
      "value": "18.5",
      "evidence": "Gewicht: ca. 18,5 kg (small)",
      "confidence": 1
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "notes": "The source names a Brompton 4-speed hub gear system, but Brompton is not a permitted groupset brand or family in the vocabulary. Wheel material and wheel tier are not established; only 20-inch rims/wheels are mentioned. Weight is specified for the small size."
  }
}

Normalized record

{
  "id": "zweirad-stadler:brompton-electric-g-line-g4-e-bike-faltrad-20-orange",
  "retailer": "zweirad-stadler",
  "retailerProductId": "brompton-electric-g-line-g4-e-bike-faltrad-20-orange",
  "productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/e-bikes/e-klapprad-faltrad/brompton-electric-g-line-g4-e-bike-faltrad-20-orange.html",
  "brand": "Brompton",
  "model": "Electric G-Line G4 E-Bike Faltrad 20\" orange",
  "modelYear": null,
  "category": "e-bike",
  "categoryBasis": "stated",
  "sourceCategory": "e-bike",
  "price": 3999,
  "originalPrice": null,
  "currency": "EUR",
  "discountPercent": null,
  "frameMaterial": "steel",
  "frameModel": null,
  "frameTier": null,
  "groupsetBrand": null,
  "groupsetFamily": null,
  "groupsetGeneration": null,
  "electronicShifting": null,
  "speeds": null,
  "mixedGroupset": null,
  "groupsetComponents": null,
  "groupsetTierSpread": 0,
  "crank": "Brompton, 50T",
  "cassette": "11-13-15-18 Zähne",
  "brakes": "hydraulic-disc",
  "brakePistons": null,
  "brakeTier": "unknown",
  "suspension": "none",
  "fork": {
    "make": null,
    "line": null,
    "tier": "rigid",
    "travelMm": 0
  },
  "rearShock": null,
  "dropperPost": false,
  "beltDrive": null,
  "hubDynamo": null,
  "rack": true,
  "mudguards": true,
  "chaincase": null,
  "kickstand": null,
  "lighting": true,
  "wheelSize": "other",
  "wheelset": null,
  "wheelMaterial": "unknown",
  "wheelTier": "unknown",
  "tyres": "Schwalbe G-One Allround 54-406 Tan Wall",
  "weightKg": 18.5,
  "ebike": {
    "motor": {
      "text": null,
      "brand": null,
      "model": null,
      "position": "rear-hub",
      "torqueNm": null,
      "torqueSource": null,
      "ratedPowerW": null,
      "peakPowerW": null
    },
    "battery": {
      "text": "Brompton",
      "capacityWh": 345,
      "count": null,
      "integration": "unknown",
      "removable": null
    },
    "speedClass": "pedelec-25",
    "rangeExtender": "unknown",
    "display": null,
    "abs": null,
    "autoShift": null,
    "statedRangeKm": null,
    "eDiscipline": "e-folding",
    "eDisciplineBasis": "leaf",
    "frameShape": "unknown",
    "cargoType": "unknown",
    "maxSystemWeightKg": null,
    "rackCapacityKg": 10,
    "weightIncludesBattery": null
  },
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "S",
      "size": "S",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "7-14 Werktage"
    }
  ],
  "seller": null,
  "availability": "limited",
  "gtins": [],
  "imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/brompton-20-electricgline-faltrad-orange-133000a.jpg",
  "rawTitle": "Brompton Electric G-Line G4 E-Bike Faltrad 20\" orange",
  "fetchedAt": "2026-09-26T08:25:48.047Z",
  "normalizationConfidence": 0.58,
  "warnings": [
    {
      "code": "single-size-only",
      "message": "Only one size is in stock (S).",
      "severity": "info"
    },
    {
      "code": "groupset-unknown",
      "message": "Groupset could not be established.",
      "severity": "high"
    },
    {
      "code": "wheel-material-unknown",
      "message": "Wheel material could not be established.",
      "severity": "info"
    }
  ],
  "ebikeAi": {
    "requested": [
      "motorBrand",
      "motorModel",
      "batteryWh",
      "batteryIntegration",
      "frameShape"
    ],
    "applied": [
      "batteryWh"
    ],
    "rejected": [],
    "notes": "Der Motor wird nur als Heckantrieb bezeichnet; ein Motorhersteller oder exaktes Motormodell ist nicht genannt. Die Rahmenform ist als „Falt“ angegeben, was keiner der vorgegebenen Rahmenform-Kategorien eindeutig entspricht. Die Akku-Integration wird nicht angegeben.",
    "raw": {
      "motorBrand": {
        "value": null,
        "evidence": null,
        "confidence": 1
      },
      "motorModel": {
        "value": null,
        "evidence": null,
        "confidence": 1
      },
      "batteryWh": {
        "value": "345",
        "evidence": "Kapazität: 345 Wh",
        "confidence": 1
      },
      "speedClass": {
        "value": "pedelec-25",
        "evidence": "Unterstützung: bis zu 25 km/h",
        "confidence": 1
      },
      "batteryIntegration": {
        "value": null,
        "evidence": null,
        "confidence": 1
      },
      "frameShape": {
        "value": null,
        "evidence": null,
        "confidence": 1
      },
      "notes": "Der Motor wird nur als Heckantrieb bezeichnet; ein Motorhersteller oder exaktes Motormodell ist nicht genannt. Die Rahmenform ist als „Falt“ angegeben, was keiner der vorgegebenen Rahmenform-Kategorien eindeutig entspricht. Die Akku-Integration wird nicht angegeben."
    }
  }
}

Parsed specification table

{
  "Material": "Handgelöteter Stahlrahmen",
  "Farbe": "orange",
  "Gabel": "Aluminium-Gabel mit Befestigungsvorrichtung",
  "Schaltung": "Nabenschaltung",
  "Gänge": "4-Gang",
  "Schaltwerk": "Brompton",
  "Bremsenart": "Hydraulische Scheibenbremsen",
  "Bremsen": "Tektro",
  "Bremsscheiben": "140 mm vorn | 160 mm hinten",
  "Kurbel": "Brompton, 50T",
  "Pedale": "Plattformpedale",
  "Kassette": "11-13-15-18 Zähne",
  "Griffe": "Ergonomische Griffe",
  "Sattelstütze": "Small – Standard Black, Medium – Extended Black, Large – Telescopic Black",
  "Sattel": "Brompton breit",
  "Laufradgröße": "20\"",
  "Reifen": "Schwalbe G-One Allround 54-406 Tan Wall",
  "Motorart": "Heckantrieb",
  "Unterstützung": "bis zu 25 km/h",
  "Akku": "Brompton",
  "Kapazität": "345 Wh",
  "Ladegerät": "Ja",
  "Scheinwerfer": "Lezyne E115, 115 Lux / 310 Lumen",
  "Rücklicht": "Busch + Müller Toplight 2C",
  "Gepäckträger": "Brompton Rollerframe (max. 10 kg)",
  "Schutzbleche": "Brompton",
  "Gewicht": "ca. 18,5 kg (small)",
  "Rahmenform": "Falt",
  "Herstellerfarbe": "adventure orange"
}

Raw adapter output

{
  "retailer": "zweirad-stadler",
  "retailerProductId": "brompton-electric-g-line-g4-e-bike-faltrad-20-orange",
  "productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/e-bikes/e-klapprad-faltrad/brompton-electric-g-line-g4-e-bike-faltrad-20-orange.html",
  "extractionMethod": "server-html",
  "sourceCategory": "e-bike",
  "rawTitle": "Brompton Electric G-Line G4 E-Bike Faltrad 20\" orange",
  "rawBrand": "Brompton",
  "price": 3999,
  "originalPrice": null,
  "currency": "EUR",
  "imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/brompton-20-electricgline-faltrad-orange-133000a.jpg",
  "rawSpecifications": {
    "Material": "Handgelöteter Stahlrahmen",
    "Farbe": "orange",
    "Gabel": "Aluminium-Gabel mit Befestigungsvorrichtung",
    "Schaltung": "Nabenschaltung",
    "Gänge": "4-Gang",
    "Schaltwerk": "Brompton",
    "Bremsenart": "Hydraulische Scheibenbremsen",
    "Bremsen": "Tektro",
    "Bremsscheiben": "140 mm vorn | 160 mm hinten",
    "Kurbel": "Brompton, 50T",
    "Pedale": "Plattformpedale",
    "Kassette": "11-13-15-18 Zähne",
    "Griffe": "Ergonomische Griffe",
    "Sattelstütze": "Small – Standard Black, Medium – Extended Black, Large – Telescopic Black",
    "Sattel": "Brompton breit",
    "Laufradgröße": "20\"",
    "Reifen": "Schwalbe G-One Allround 54-406 Tan Wall",
    "Motorart": "Heckantrieb",
    "Unterstützung": "bis zu 25 km/h",
    "Akku": "Brompton",
    "Kapazität": "345 Wh",
    "Ladegerät": "Ja",
    "Scheinwerfer": "Lezyne E115, 115 Lux / 310 Lumen",
    "Rücklicht": "Busch + Müller Toplight 2C",
    "Gepäckträger": "Brompton Rollerframe (max. 10 kg)",
    "Schutzbleche": "Brompton",
    "Gewicht": "ca. 18,5 kg (small)",
    "Rahmenform": "Falt",
    "Herstellerfarbe": "adventure orange"
  },
  "rawFeatures": [
    "E-Klapprad / -Faltrad",
    "0% Finanzierung ab 399,90 € möglich",
    "Dienstrad-Leasing möglich",
    "14 Tage kostenloses Rückgaberecht",
    "Unsere E-Bikes werden alle vor der Auslieferung fachmännisch montiert und von unseren Werkstatt-Profis Probe gefahren",
    "Hinterradmotor und 345 Wattstunden Akku",
    "4-Gang Brompton Schaltung",
    "Kräftige hydraulische Scheibenbremsen",
    "Handgelöteter Stahlrahmen",
    "20\"-Felgen für verbesserte Rolleigenschaften",
    "Breiter Lenker für bessere Kontrolle",
    "Robuste, pannensichere Schwalbe-G-One Reifen - bereit für Offroad-Abenteuer"
  ],
  "rawSizes": [
    {
      "rawSize": "S",
      "size": "S",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "7-14 Werktage"
    }
  ],
  "availabilityText": "1 of 1 sizes orderable",
  "fetchedAt": "2026-09-26T08:25:48.047Z",
  "sourceMeta": {
    "savingBadge": null,
    "deliveryWindows": [
      "S 7-14 Werktage"
    ]
  },
  "listingPath": [
    "E-Bikes",
    "E-Klapprad / -Faltrad"
  ]
}

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