BEFORE YOU BUY

How does checking a car’s MOT history
save me money before I buy?

Quick Answer
It turns guesswork into evidence before you hand over any money. Every full MOT record is free and public, and it shows exactly what’s gone wrong with a specific car, how often, and whether problems were dealt with or just carried forward to you. Here’s what to look for and what it’s worth.
THE_EVIDENCE_BEHIND_IT
289M
MOT inspection records
Complete DVSA dataset — not a sample
97,106
UK car model profiles
Every make, model, and year with sufficient test history
35
Years of vehicle data
Production years from 1990 to 2024
20+
Years of MOT test records
Every UK MOT test recorded since 2005
15.5%
National MOT failure rate
The benchmark every model is measured against
13
Intelligence types per report
Derived from the raw data — built by BIB
01
Vehicle Identity

How does confirming a car’s identity save me money before I buy?

Stops you paying for a car that isn’t what it’s advertised as. A free plate check against the official DVSA/DVLA record confirms make, model, year, engine size, MOT status and expiry, and road tax band before you view - catching a mismatched or cloned listing before it costs you a wasted trip, or worse, a deposit.

Full breakdown on Vehicle Identity
02
Mileage History

How does checking mileage history save me money before I buy?

It’s the fastest way to catch a clocked car before you pay clocked-car money for it. Every recorded mileage reading is charted against what’s typical for the same vehicle, so a reading that’s been wound back stands out immediately instead of surfacing after you’ve already overpaid for false low mileage.

Full breakdown on Mileage History
03
Model Reliability Rating

How does knowing a model’s reliability rating save me money?

It tells you whether you’re buying into a model that costs more to keep on the road than average, before you’re committed. MOT failure data across thousands of vehicles of the same make, model and year shows whether it fails more or less than the national average - below-average is a warning that ownership costs may run higher than the price tag suggests.

Full breakdown on Model Reliability Rating
04
MOT Track Record

How does a car’s MOT track record predict what I’ll spend on it later?

It shows whether this specific car’s problems are one-offs or a pattern. Its full test-by-test history is compared against other examples of the same make and model, so a component that fails repeatedly flags a car likely to keep costing money, not one that just had bad luck once.

Full breakdown on MOT Track Record
05
MOT Advisory Check

What does an MOT advisory mean, and can ignoring one cost me money?

An advisory is a fault the tester flagged as not yet serious enough to fail the car, but worth watching. Left unresolved, it very often becomes the new owner’s repair bill within months - this check shows whether the seller actually dealt with it or just carried it forward to whoever buys next.

Full breakdown on MOT Advisory Check
06
MOT History Summary

How does seeing the complete MOT history save me money before I buy?

It puts every test this car has ever had in one place, for free, so you’re working from the complete record instead of whatever the seller chooses to tell you. Every date, result, mileage reading and advisory sits together test-by-test - the foundation everything else on this page is built from.

Full breakdown on MOT History Summary
07
Wear Guide

How does knowing what wear is normal save me money at the viewing?

Stops you either overpaying for a car that needs immediate work, or walking away from one that’s actually fine. Nine mechanical categories are mapped against mileage across 289 million MOT records, so you know what a car like this typically needs at this stage of life before you’re stood in front of it being told a repair is "just normal wear."

Full breakdown on Wear Guide
08
National MOT Intelligence

How does knowing a model’s common failure points help me budget or negotiate?

It tells you what’s likely to go wrong before it does, so you can price it into your offer instead of being surprised later. The most frequent MOT failure categories for this model are ranked by how often they appear and how serious they are - real negotiating leverage, and a real number to budget against.

Full breakdown on National MOT Intelligence
09
The 3-Year Test

How does the 3-year test save me money on a nearly-new car?

It reveals whether a model’s problems come from the design itself rather than how it was looked after. First-MOT failure rates, taken before ownership habits become a variable, show the car’s inherent mechanical character - useful when "well looked after" is hardest to verify, on a nearly-new car.

Full breakdown on The 3-Year Test
10
Best Years To Buy

How does knowing the best model year to buy save me money?

It can steer you away from a specific production year with known problems, even within a model that’s reliable overall. Failure rates compared across every production year show whether the exact year you’re looking at is from a strong run or a weak one, before you commit.

Full breakdown on Best Years To Buy
11
Worth Comparing

How does comparing this car against similar ones save me money?

It answers what a single check can’t: is there a more reliable alternative in the same class? This car is benchmarked against comparable models of similar type and age by national MOT failure rate, so if there’s a stronger choice in the same class, you know before you commit rather than after.

Full breakdown on Worth Comparing
12
Questions To Ask

What questions should I ask a seller to protect my money?

The right questions come from the model’s actual failure history, not a generic checklist. A targeted inspection list built from this model’s most common failure points means arriving knowing exactly what to look at, what to ask, and roughly what a problem would cost - turning "any issues?" into specific, hard-to-dodge questions.

Full breakdown on Questions To Ask
13
Expert Notes

How does expert insight catch money risks raw data alone won’t show me?

Official records can’t capture everything real owners know about a model. Verified BIB members contribute factual notes on specific models, reviewed before publication - the kind of practical knowledge (a known weak point, a common workaround) that data doesn’t track but real cost still depends on.

Full breakdown on Expert Notes

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