Questions to Ask a Seller After Checking MOT History
The MOT record flags exactly where a car's weak points are. Here are the precise questions to ask the seller next, and the red-flag replies you should listen out for.
Looking at the MOT history is only half the battle. A truly smart buyer checks the red flags and then asks the seller directly about them. The way a seller answers these specific history-based questions will often tell you more about the condition of the car than the MOT certificate itself.
Questions to ask after an MOT history check
Repeated Advisories
"I noticed the suspension was flagged as an advisory for three years in a row. Was that issue eventually repaired or has it just kept recurring?"
Reassuring Answer
"Yes, we finally had the whole lower arm replaced at our local garage last September. I've got the paper invoice here to prove it."
Evasive Answer
"Oh, the tester was just being picky. It always passes legally though so I haven't worried about it."
Reduce offer if: No invoices exist and you now have to budget for the repair yourself.
Walk away if: They get defensive or lie about repeated MOT advisories you can clearly see in the record.
Fail Then Pass History
"Last year it failed on emissions and brakes, but passed the next day. Can you walk me through exactly what was done to fix it?"
Reassuring Answer
"It needed a new DPF sensor and full rear brake discs. The garage ordered the parts, fitted them that afternoon, and retested it successfully."
Evasive Answer
"My mate is an MOT tester, he just cleared it the next morning. Don't worry, it runs fine."
Reduce offer if: The fix sounds like it was done using cheap part swaps just prior to the sale.
Walk away if: You suspect a fraudulent fail then pass test just to secure a fresh certificate.
Corrosion
"I see a rust advisory on the inner sills from 2021. Was that just surface rust, or did a garage need to weld it?"
Reassuring Answer
"It was surface rust. We had the underneath fully wire-brushed and coated in preventative sealant right after that test."
Evasive Answer
"It's an old car, they all rust underneath eventually. Barely notice it anyway."
Reduce offer if: The rust is confirmed un-repaired but currently structural-safe, leaving you with future prevention costs.
Walk away if: The seller dodges answering where the rust specifically is or hides poor quality patch welds.
Tyres, Brakes, and Suspension Wear
"The last MOT mentions both rear tyres and the shock absorbers. Can you confirm if you replaced both sides as a pair, or just the one item that failed?"
Reassuring Answer
"I always replace suspension parts and tyres in pairs across the axle. Both rear shocks are brand new."
Evasive Answer
"I think the garage just changed the one tyre that was low. It passed after that so I didn't ask."
Reduce offer if: Significant routine maintenance has been entirely ignored prior to the sale.
Walk away if: You notice mixed, severely mismatched budget tyres combined with totally worn brakes showing dangerous corner-cutting.
Oil Leaks and Emissions Warnings
"There is an advisory for 'oil leak' logged. Has a mechanic actually diagnosed where that is coming from yet?"
Reassuring Answer
"Yes, my mechanic diagnosed it as a weeping rocker cover gasket. It was replaced two months ago, which stopped the leak."
Evasive Answer
"Oh, all these cars use a drop of oil between services. You just top it up occasionally."
Reduce offer if: An untreated leak is minor (like a sump plug) but still needs your money to fix properly.
Walk away if: A severe, undiagnosed leak is actively dripping, risking catastrophic engine block failure.
Mileage Concerns and Gaps
"There is an 18-month gap in the MOT history. Can you confirm if the car was declared SORN or kept off-road during that time?"
Reassuring Answer
"Yes, I was working abroad so it was kept in my parents' dry garage. I have the SORN confirmation letter from the DVLA right here."
Evasive Answer
"To be honest I can't remember. I think the records just didn't update properly."
Reduce offer if: The car genuinely sat unused for years meaning rubber hoses and belts need an immediate overhaul.
Walk away if: Suspicions of a mileage discrepancy arise from an evasive story that makes no logical sense.
Questions that test whether the seller actually understands the car
A private seller claiming a car has been "loved" should at least know its basic mechanical quirks. Use the MOT history to check if their claims hold up.
- • "What intervals have you been doing the oil changes at?" (Check if it aligns with what's recommended).
- • "When was the last time the cambelt/timing chain was inspected?"
- • "It looks like the car does mainly short-town trips, have you ever taken it on the motorway to clear out the DPF?"
When the seller's answer matters more than the MOT line itself
Never forget that the MOT is just a snapshot. What matters is the human behavior.
A car with a messy MOT test containing five advisories isn't inherently a disaster *if* the seller immediately says: "Yes, we had a bad test that year. Here is the £800 invoice from the following week where we had every single item repaired."
Conversely, a completely "clean" pass can be deeply terrifying if the previous three years highlight repeated massive suspension failures, and the seller suddenly becomes furious and dismissive when you ask about it.
When to stop asking questions and walk away
No amount of discounting makes up for a fundamentally dishonest transaction. Stop talking and walk away immediately if:
- • They deny documented, objective DVSA facts.
- • They aggressively rush you and claim "five other people are coming to buy it".
- • They refuse to let a trusted mechanic inspect the car before payment.
- • They claim they "lost" the V5C logbook or service history yesterday.
See which MOT issues to ask the seller about before you buy
The free MOT record shows what was flagged. CarIntellect helps you spot recurring red flags, understand what they could mean, and know which issues deserve closer questioning before you commit.
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