How to read a vehicle maintenance history

Why the service history matters more than the mileage

Two cars with identical mileage can be in completely different condition. The deciding factor is almost always how the vehicle was maintained. A complete, consistent maintenance history is the closest thing you have to a medical chart for a car: it shows what was done, when, and by whom.

A well-documented history reduces risk for the buyer and adds real resale value for the seller. When records are missing, you are effectively guessing, and guessing is expensive.

The entries that matter most

Not every line item carries the same weight. Focus first on the services that protect the most expensive components.

• Oil and filter changes at regular intervals — the single best indicator of routine care.
• Timing belt or chain service, where applicable, since failure can destroy an engine.
• Brake fluid, coolant and transmission fluid changes on schedule.
• Major scheduled services (often at fixed mileage milestones).
• Tyres, battery and brake component replacements with dates.

Look for consistency, not perfection

A trustworthy record is regular and chronological. Gaps of several years, sudden jumps in mileage between entries, or a flurry of work right before a sale all deserve a closer look.

Consistency in who performed the work also matters. A car serviced by the same workshop over years usually means someone was paying attention to it over time.

Red flags to watch for

• Mileage that decreases or stalls between service entries.
• Long unexplained gaps with no servicing at all.
• Receipts that do not match the claimed work.
• Major repairs that appear once and never recur (sometimes a sign of a recurring, unresolved fault).
• A history that begins only recently on an older vehicle.

How a digital history changes the game

Paper folders get lost, and verbal assurances are impossible to verify. A digital maintenance log that timestamps each entry and ties it to a specific vehicle is far harder to fake and far easier to hand over at sale time.

On MyGarage, every logged service, expense and photo builds a timeline that travels with the vehicle. When you browse the marketplace, that history is right there alongside the listing — so you are buying a documented car, not a story.