Mazda B Series (2004)

What to check before buying a 2004 Mazda B Series

Practical pre-purchase checks for this age and model.

• 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
• 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
• 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
• ⚠️ 37.5% of these vehicles have had a dangerous defect recorded. Enter the reg below — the full MOT history will show exactly what was flagged and whether it was resolved.
• 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.

Before you buy a Mazda B Series

MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.

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Pass Rate by Fuel Type

Mileage Distribution

Most 2004 Mazda B Series vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.

Half of all 2004 Mazda B Series vehicles fall between 61,928 and 107,308 miles.

2004 Mazda B Series — Still on the Road

Numbers are declining — 134 vehicles still getting MOTs in 2025 (23% of peak).

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.

MOT History Averages

Found a specific Mazda B Series?

Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.