{"vehicle":{"brand":"Mazda","model":"Mazda3","segment":"Compact sedan/hatchback","modelYears":"2004-2026","sourcePriority":["Mazda Scheduled Maintenance PDFs","NHTSA VIN Decoder API"],"priorityTier":"core","maintenanceHighlights":["engine oil","spark plugs","coolant","drive belt inspection"]},"totalScheduleItems":2,"schedule":[{"id":"2021-mazda3-oil-severe","brand":"Mazda","model":"Mazda3","year":2021,"engine":"2.5L I4","drivetrain":"FWD","itemId":"engine-oil-filter","action":"replace","condition":"severe","intervalMiles":5000,"intervalMonths":6,"notes":"Based on the severe driving schedule pattern shown in Mazda scheduled maintenance documentation.","sourceName":"Mazda Scheduled Maintenance PDFs","citationUrl":"https://www.mazdausa.com/siteassets/global-resources/vehicle-resources/owner-manuals/2021/m3s/2021-mazda3-sedan-hatchback-scheduled-maintenance.pdf","item":{"id":"engine-oil-filter","category":"Fluids","name":"Engine oil and filter","system":"Engine lubrication","defaultUnit":"miles-or-months","whyItMatters":"Frequent oil service is the foundation of long engine life and is the interval most owners need to track well."}},{"id":"2021-mazda3-air-filter-normal","brand":"Mazda","model":"Mazda3","year":2021,"engine":"2.5L I4","drivetrain":"FWD","itemId":"engine-air-filter","action":"inspect","condition":"normal","intervalMiles":30000,"intervalMonths":24,"notes":"Seed interval demonstrating inspection-oriented maintenance, which must be distinct from replacement actions.","sourceName":"Mazda Scheduled Maintenance PDFs","citationUrl":"https://www.mazdausa.com/siteassets/global-resources/vehicle-resources/owner-manuals/2021/m3s/2021-mazda3-sedan-hatchback-scheduled-maintenance.pdf","item":{"id":"engine-air-filter","category":"Filters and ignition","name":"Engine air filter","system":"Intake","defaultUnit":"miles-or-months","whyItMatters":"A neglected air filter can reduce efficiency and increase engine strain over time."}}],"parsedCoverage":{"totalRecords":6,"availableYears":[2021],"categories":["Chassis and wear items","Filters and ignition","Fluids"]},"parsedRecords":[{"id":"2021-mazda3-scheduled-maintenance-oil-severe","brand":"Mazda","model":"Mazda3","year":2021,"engine":"2.5L I4","drivetrain":"FWD","itemId":"engine-oil-filter","action":"replace","condition":"severe","intervalMiles":5000,"intervalMonths":6,"extractionMethod":"footnote","parserConfidence":"high","notes":"Derived from the severe driving schedule section where engine oil and filter replacement repeats every 5,000 miles / 6 months.","sourceName":"Mazda Scheduled Maintenance PDFs","citationUrl":"https://www.mazdausa.com/siteassets/global-resources/vehicle-resources/owner-manuals/2021/m3s/2021-mazda3-sedan-hatchback-scheduled-maintenance.pdf","evidenceSnippet":"cation will come on before reaching the maximum interval of 16,000 km (10,000 miles), or 12 months (after the previous maintenance). If you drive your vehicle under any of the following conditions, follow the Severe Driving Scheduled Maintenance and replace the engine oil and filter every 8,000 km (5,000 miles) or 6 months, whichever comes first. Otherwise, follow the Normal Driving Scheduled Maintenance intervals. 1. The vehicle is idled for long periods or driven at low speeds, such as with police cars, taxis, or driver's education school car. 2. Driving under dusty conditions. 3. Driving fo","item":{"id":"engine-oil-filter","category":"Fluids","name":"Engine oil and filter","system":"Engine lubrication","defaultUnit":"miles-or-months","whyItMatters":"Frequent oil service is the foundation of long engine life and is the interval most owners need to track well."},"sourceTargetId":"2021-mazda3-scheduled-maintenance","review":null},{"id":"2021-mazda3-scheduled-maintenance-oil-normal","brand":"Mazda","model":"Mazda3","year":2021,"engine":"2.5L I4","drivetrain":"FWD","itemId":"engine-oil-filter","action":"replace","condition":"normal","intervalMiles":10000,"intervalMonths":12,"extractionMethod":"footnote","parserConfidence":"high","notes":"Derived from the normal schedule wording that sets a 10,000 mile / 12 month upper limit for engine oil replacement.","sourceName":"Mazda Scheduled Maintenance PDFs","citationUrl":"https://www.mazdausa.com/siteassets/global-resources/vehicle-resources/owner-manuals/2021/m3s/2021-mazda3-sedan-hatchback-scheduled-maintenance.pdf","evidenceSnippet":"lerts you of maintenance needs by turning on the wrench indicator light or displaying a message in the instrument panel, or both. Every maintenance must be done when the display/wrench indication comes on. The display/wrench indication will come on before reaching the maximum interval of 16,000 km (10,000 miles), or 12 months (after the previous maintenance). If you drive your vehicle under any of the following conditions, follow the Severe Driving Scheduled Maintenance and replace the engine oil and filter every 8,000 km (5,000 miles) or 6 months, whichever comes first. Otherwise, follow the","item":{"id":"engine-oil-filter","category":"Fluids","name":"Engine oil and filter","system":"Engine lubrication","defaultUnit":"miles-or-months","whyItMatters":"Frequent oil service is the foundation of long engine life and is the interval most owners need to track well."},"sourceTargetId":"2021-mazda3-scheduled-maintenance","review":null},{"id":"2021-mazda3-scheduled-maintenance-spark-plugs","brand":"Mazda","model":"Mazda3","year":2021,"engine":"2.5L I4","drivetrain":"FWD","itemId":"spark-plugs","action":"replace","condition":"normal","intervalMiles":75000,"intervalMonths":null,"extractionMethod":"table-row","parserConfidence":"high","notes":"Derived from the spark plug interval for non-turbo 2.5L Mazda3 applications in the normal schedule table.","sourceName":"Mazda Scheduled Maintenance PDFs","citationUrl":"https://www.mazdausa.com/siteassets/global-resources/vehicle-resources/owner-manuals/2021/m3s/2021-mazda3-sedan-hatchback-scheduled-maintenance.pdf","evidenceSnippet":"","item":{"id":"spark-plugs","category":"Filters and ignition","name":"Spark plugs","system":"Ignition","defaultUnit":"miles","whyItMatters":"Worn spark plugs can cause misfires, poor combustion, and catalytic-converter stress."},"sourceTargetId":"2021-mazda3-scheduled-maintenance","review":null},{"id":"2021-mazda3-scheduled-maintenance-coolant","brand":"Mazda","model":"Mazda3","year":2021,"engine":"2.5L I4","drivetrain":"FWD","itemId":"engine-coolant","action":"replace","condition":"both","intervalMiles":120000,"intervalMonths":120,"extractionMethod":"table-row","parserConfidence":"high","notes":"Derived from the normal schedule wording for first coolant replacement at 120,000 miles / 120 months.","sourceName":"Mazda Scheduled Maintenance PDFs","citationUrl":"https://www.mazdausa.com/siteassets/global-resources/vehicle-resources/owner-manuals/2021/m3s/2021-mazda3-sedan-hatchback-scheduled-maintenance.pdf","evidenceSnippet":"","item":{"id":"engine-coolant","category":"Fluids","name":"Engine coolant","system":"Cooling system","defaultUnit":"miles-or-months","whyItMatters":"Coolant condition affects thermal control, corrosion resistance, and head-gasket and water-pump life."},"sourceTargetId":"2021-mazda3-scheduled-maintenance","review":null},{"id":"2021-mazda3-scheduled-maintenance-air-filter-inspection","brand":"Mazda","model":"Mazda3","year":2021,"engine":"2.5L I4","drivetrain":"FWD","itemId":"engine-air-filter","action":"inspect","condition":"normal","intervalMiles":30000,"intervalMonths":24,"extractionMethod":"table-row","parserConfidence":"medium","notes":"Derived from the repeating air filter row in the normal schedule. This currently models the row as an inspection-style recurring service until row-level table parsing is added.","sourceName":"Mazda Scheduled Maintenance PDFs","citationUrl":"https://www.mazdausa.com/siteassets/global-resources/vehicle-resources/owner-manuals/2021/m3s/2021-mazda3-sedan-hatchback-scheduled-maintenance.pdf","evidenceSnippet":"d Puerto Rico Residents (Normal Driving Scheduled Maintenance): Maintenance Item Number of times, maintenance was performed. 12345678 Engine oil & filter *1 RRRRRRRR Spark plugs SKYACTIV-G 2.5T Replace every 64,000 km (40,000 miles). Except SKY- ACTIV-G 2.5T Replace every 120,000 km (75,000 miles). Air filterRR Drive beltsIIIIIIII Engine coolant levelIIIIIIII Engine coolant *2 Replace at first 192,000 km (120,000 miles) or 120 months; after that, every 96,000 km (60,000 miles) or 60 months. Fuel lines & hoses *3 IIII Hoses and tubes for emission *3 II Maintenance and Care Scheduled Maintenance","item":{"id":"engine-air-filter","category":"Filters and ignition","name":"Engine air filter","system":"Intake","defaultUnit":"miles-or-months","whyItMatters":"A neglected air filter can reduce efficiency and increase engine strain over time."},"sourceTargetId":"2021-mazda3-scheduled-maintenance","review":{"status":"needs_review","notes":"Interval is currently inferred from a repeating row and should be tightened with stronger row-level extraction."}},{"id":"2021-mazda3-scheduled-maintenance-drive-belt-inspection","brand":"Mazda","model":"Mazda3","year":2021,"engine":"2.5L I4","drivetrain":"FWD","itemId":"drive-belt-inspection","action":"inspect","condition":"normal","intervalMiles":10000,"intervalMonths":12,"extractionMethod":"table-row","parserConfidence":"medium","notes":"Derived from the drive belt inspection row that repeats across the Mazda maintenance table.","sourceName":"Mazda Scheduled Maintenance PDFs","citationUrl":"https://www.mazdausa.com/siteassets/global-resources/vehicle-resources/owner-manuals/2021/m3s/2021-mazda3-sedan-hatchback-scheduled-maintenance.pdf","evidenceSnippet":"Residents (Normal Driving Scheduled Maintenance): Maintenance Item Number of times, maintenance was performed. 12345678 Engine oil & filter *1 RRRRRRRR Spark plugs SKYACTIV-G 2.5T Replace every 64,000 km (40,000 miles). Except SKY- ACTIV-G 2.5T Replace every 120,000 km (75,000 miles). Air filterRR Drive beltsIIIIIIII Engine coolant levelIIIIIIII Engine coolant *2 Replace at first 192,000 km (120,000 miles) or 120 months; after that, every 96,000 km (60,000 miles) or 60 months. Fuel lines & hoses *3 IIII Hoses and tubes for emission *3 II Maintenance and Care Scheduled Maintenance 6-4 Mazda3_8","item":{"id":"drive-belt-inspection","category":"Chassis and wear items","name":"Drive belt inspection","system":"Accessory drive","defaultUnit":"miles-or-months","whyItMatters":"Drive belt wear can eventually affect charging, cooling, and accessory operation, so inspections matter before failure."},"sourceTargetId":"2021-mazda3-scheduled-maintenance","review":{"status":"needs_review","notes":"Drive belt cadence is modeled conservatively and should be revisited after deeper table extraction."}}]}