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

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

Eligibility

Cannot win: probably-a-frameset; 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

• blocking probably-a-frameset — Spec table lists neither a drivetrain nor wheels: likely a frameset.
• high incomplete-build — Detailed spec table with no drivetrain component listed.
• 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": 3,
  "suspensionScore": 2,
  "weightAdjustment": -3,
  "equipmentValue": 20,
  "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.",
    "19.5 kg vs 14.4 kg mtb-hardtail reference = -3.",
    "Fork \"rigid\" +2 (0 mm travel, which is not scored).",
    "Dropper post +3."
  ],
  "marketPrice": null,
  "valueScore": null,
  "savingsVsMarket": null
}

AI normalization

{
  "requested": [
    "groupsetFamily",
    "wheelMaterial",
    "wheelTier"
  ],
  "applied": [],
  "rejected": [],
  "notes": "The source specifies a 4-speed chain drivetrain but does not name a recognized groupset family or brand. Wheel material and wheelset model are not specified, so wheel tier cannot be determined.",
  "raw": {
    "frameMaterial": {
      "value": "steel",
      "evidence": "Material: Stahl",
      "confidence": 1
    },
    "groupsetBrand": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "groupsetFamily": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "electronicShifting": {
      "value": "false",
      "evidence": "4-Gang-Kettenschaltung",
      "confidence": 0.9
    },
    "speeds": {
      "value": "4",
      "evidence": "Gänge: 4-Gang",
      "confidence": 1
    },
    "mixedGroupset": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "brakes": {
      "value": "hydraulic-disc",
      "evidence": "Hydraulische Tektro-Scheibenbremsen",
      "confidence": 1
    },
    "weightKg": {
      "value": "19.5",
      "evidence": "Gewicht: ca. 19,5 kg",
      "confidence": 1
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 1
    },
    "notes": "The source specifies a 4-speed chain drivetrain but does not name a recognized groupset family or brand. Wheel material and wheelset model are not specified, so wheel tier cannot be determined."
  }
}

Normalized record

{
  "id": "zweirad-stadler:brompton-electric-g-line-g4-e-bike-faltrad-20-schwarz",
  "retailer": "zweirad-stadler",
  "retailerProductId": "brompton-electric-g-line-g4-e-bike-faltrad-20-schwarz",
  "productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/e-bikes/e-klapprad-faltrad/brompton-electric-g-line-g4-e-bike-faltrad-20-schwarz.html",
  "brand": "Brompton",
  "model": "Electric G-Line G4 E-Bike Faltrad 20\" schwarz",
  "modelYear": null,
  "category": "e-bike",
  "categoryBasis": "stated",
  "sourceCategory": "e-bike",
  "price": 4249,
  "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": null,
  "cassette": null,
  "brakes": "hydraulic-disc",
  "brakePistons": null,
  "brakeTier": "unknown",
  "suspension": "none",
  "fork": {
    "make": null,
    "line": null,
    "tier": "rigid",
    "travelMm": 0
  },
  "rearShock": null,
  "dropperPost": true,
  "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 All Round Tan Wall",
  "weightKg": 19.5,
  "ebike": {
    "motor": {
      "text": "Brompton",
      "brand": null,
      "model": null,
      "position": "unknown",
      "torqueNm": 30,
      "torqueSource": "retailer",
      "ratedPowerW": null,
      "peakPowerW": null
    },
    "battery": {
      "text": "mit LED Display",
      "capacityWh": 345,
      "count": 1,
      "integration": "unknown",
      "removable": null
    },
    "speedClass": "unknown",
    "rangeExtender": "unknown",
    "display": null,
    "abs": null,
    "autoShift": null,
    "statedRangeKm": null,
    "eDiscipline": "e-folding",
    "eDisciplineBasis": "leaf",
    "frameShape": "unknown",
    "cargoType": "unknown",
    "maxSystemWeightKg": 130,
    "rackCapacityKg": null,
    "weightIncludesBattery": null
  },
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "M | 168 - 183 cm",
      "size": null,
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "7-14 Werktage"
    },
    {
      "rawSize": "L | 183 - 198 cm",
      "size": null,
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    }
  ],
  "seller": null,
  "availability": "in-stock",
  "gtins": [],
  "imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/brompton-g-line-g8m-e-bike-faltrad-schwarz-700171-a.jpg",
  "rawTitle": "Brompton Electric G-Line G4 E-Bike Faltrad 20\" schwarz",
  "fetchedAt": "2026-09-26T08:25:49.142Z",
  "normalizationConfidence": 0.58,
  "warnings": [
    {
      "code": "probably-a-frameset",
      "message": "Spec table lists neither a drivetrain nor wheels: likely a frameset.",
      "severity": "blocking"
    },
    {
      "code": "incomplete-build",
      "message": "Detailed spec table with no drivetrain component listed.",
      "severity": "high"
    },
    {
      "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",
      "speedClass",
      "batteryIntegration",
      "frameShape"
    ],
    "applied": [],
    "rejected": [],
    "notes": "The source names a Brompton eMotiq rear hub motor, but Brompton is not an allowed motorBrand and the exact motor model is not established. Speed class, battery integration, and frame shape are not stated.",
    "raw": {
      "motorBrand": {
        "value": null,
        "evidence": null,
        "confidence": 0
      },
      "motorModel": {
        "value": null,
        "evidence": null,
        "confidence": 0
      },
      "batteryWh": {
        "value": "345",
        "evidence": "345 Wh Lithium-Ionen-Akku, Reichweite bis zu 90 km (je nach Modus und Terrain)",
        "confidence": 1
      },
      "speedClass": {
        "value": null,
        "evidence": null,
        "confidence": 0
      },
      "batteryIntegration": {
        "value": null,
        "evidence": null,
        "confidence": 0
      },
      "frameShape": {
        "value": null,
        "evidence": null,
        "confidence": 0
      },
      "notes": "The source names a Brompton eMotiq rear hub motor, but Brompton is not an allowed motorBrand and the exact motor model is not established. Speed class, battery integration, and frame shape are not stated."
    }
  }
}

Parsed specification table

{
  "Material": "Stahl",
  "Farbe": "schwarz",
  "Herstellerfarbe": "space black",
  "Motorart": "Heckantrieb",
  "Motorhersteller": "Brompton",
  "Max. Drehmoment": "30 Nm",
  "Akku": "mit LED Display",
  "Kapazität": "345 Wh",
  "Ladegerät": "2 A",
  "Gabel": "Aluminium",
  "Gänge": "4-Gang",
  "Bremsenart": "Hydraulische Scheibenbremsen",
  "Bremsen vorne": "Tektro",
  "Bremsen hinten": "Tektro",
  "Bremsscheiben": "140 mm / 160 mm",
  "Laufradgröße": "20\"",
  "Reifen": "Schwalbe G-One All Round Tan Wall",
  "Reifengröße": "54-406",
  "Sattel": "Standard",
  "Sattelstütze": "M (Extended Black); L (Teleskop Black)",
  "Pedale": "Breite Plattformpedale mit Schnellösesystem",
  "Griffe": "Ergonomisch",
  "Steuersatz": "Brompton",
  "Scheinwerfer": "Lezyne E115, 115 Lux/310 Lumen",
  "Rücklicht": "Busch + Müller Toplight 2C",
  "Schutzbleche": "Ja",
  "Gepäckträger": "Ja",
  "Sonstiges": "Akkutasche, Klingel",
  "Faltmaß": "72 cm x 67 cm x 41 cm",
  "Gewicht": "ca. 19,5 kg",
  "zul. Gesamtgewicht": "max. 130 kg"
}

Raw adapter output

{
  "retailer": "zweirad-stadler",
  "retailerProductId": "brompton-electric-g-line-g4-e-bike-faltrad-20-schwarz",
  "productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/e-bikes/e-klapprad-faltrad/brompton-electric-g-line-g4-e-bike-faltrad-20-schwarz.html",
  "extractionMethod": "server-html",
  "sourceCategory": "e-bike",
  "rawTitle": "Brompton Electric G-Line G4 E-Bike Faltrad 20\" schwarz",
  "rawBrand": "Brompton",
  "price": 4249,
  "originalPrice": null,
  "currency": "EUR",
  "imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/brompton-g-line-g8m-e-bike-faltrad-schwarz-700171-a.jpg",
  "rawSpecifications": {
    "Material": "Stahl",
    "Farbe": "schwarz",
    "Herstellerfarbe": "space black",
    "Motorart": "Heckantrieb",
    "Motorhersteller": "Brompton",
    "Max. Drehmoment": "30 Nm",
    "Akku": "mit LED Display",
    "Kapazität": "345 Wh",
    "Ladegerät": "2 A",
    "Gabel": "Aluminium",
    "Gänge": "4-Gang",
    "Bremsenart": "Hydraulische Scheibenbremsen",
    "Bremsen vorne": "Tektro",
    "Bremsen hinten": "Tektro",
    "Bremsscheiben": "140 mm / 160 mm",
    "Laufradgröße": "20\"",
    "Reifen": "Schwalbe G-One All Round Tan Wall",
    "Reifengröße": "54-406",
    "Sattel": "Standard",
    "Sattelstütze": "M (Extended Black); L (Teleskop Black)",
    "Pedale": "Breite Plattformpedale mit Schnellösesystem",
    "Griffe": "Ergonomisch",
    "Steuersatz": "Brompton",
    "Scheinwerfer": "Lezyne E115, 115 Lux/310 Lumen",
    "Rücklicht": "Busch + Müller Toplight 2C",
    "Schutzbleche": "Ja",
    "Gepäckträger": "Ja",
    "Sonstiges": "Akkutasche, Klingel",
    "Faltmaß": "72 cm x 67 cm x 41 cm",
    "Gewicht": "ca. 19,5 kg",
    "zul. Gesamtgewicht": "max. 130 kg"
  },
  "rawFeatures": [
    "E-Klapprad / -Faltrad",
    "M | 168 - 183 cm 7-14 Werktage",
    "L | 183 - 198 cm 4-8 Werktage",
    "0% Finanzierung ab 424,90 € 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",
    "Eines für alles: Erlebe mit dem Brompton G Line das erste Faltrad, das sich wie ein „Großes“ fährt. Ob täglicher Arbeitsweg, Hop-on-Hop-off im Zug oder Wochenend-Abenteuer im Grünen – das Brompton G-Line E-Faltrad ist dein ultimativer Begleiter für maximale Freiheit.",
    "Brompton eMotiq Hinterrad-Nabenmotor 30 Nm",
    "345 Wh Lithium-Ionen-Akku, Reichweite bis zu 90 km (je nach Modus und Terrain)",
    "4-Gang-Kettenschaltung",
    "Hydraulische Tektro-Scheibenbremsen"
  ],
  "rawSizes": [
    {
      "rawSize": "M | 168 - 183 cm",
      "size": null,
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "7-14 Werktage"
    },
    {
      "rawSize": "L | 183 - 198 cm",
      "size": null,
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    }
  ],
  "availabilityText": "2 of 2 sizes orderable",
  "fetchedAt": "2026-09-26T08:25:49.142Z",
  "sourceMeta": {
    "savingBadge": null,
    "deliveryWindows": [
      "M | 168 - 183 cm 7-14 Werktage",
      "L | 183 - 198 cm 4-8 Werktage"
    ]
  },
  "listingPath": [
    "E-Bikes",
    "E-Klapprad / -Faltrad"
  ]
}

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