Used car check tool
Enter the year, odometer reading and fuel type from the listing. The tool works out the car's kilometres per year and benchmarks it against what an Irish car of that age and fuel type would typically have covered — then gives you a plain-English read on whether the mileage is low, normal or high. Make and model are optional and only label the result.
What this tool does and doesn't do. It does honest arithmetic on mileage and walks you through what to verify. It deliberately does not invent a "fair price" or a repair-cost estimate for your specific car — those numbers can't be known reliably from a listing, and a confident guess is worse than none. For finance, write-off and ownership records you need a paid history check; for mechanical condition you need an inspection. Both are covered below.
How the mileage check works
The maths is simple and transparent: total kilometres ÷ the car's age in years = kilometres per year. We then compare that to the typical Irish annual mileage for the car's fuel type, because a diesel and a petrol of the same age are expected to have covered very different distances.
| km/year vs fuel-type average | Verdict | What it means |
|---|---|---|
| Under 50% | Very low | Verify against history — clocking and time-based wear risks |
| 50–80% | Below average | Generally a plus if the history matches |
| 80–120% | Average | Normal — not a concern on its own |
| 120–160% | Above average | Fine if well-serviced; expect a lower price |
| Over 160% | High | More wear — history and inspection matter most here |
A 200,000 km motorway diesel with a full service history can be a far better buy than an 80,000 km petrol that's done nothing but short cold trips and never seen a garage. Use the mileage read as a starting point, then let the checklist and a proper inspection decide it.
Average mileage in Ireland
Irish private cars cover roughly 16,000–17,000 km per year on average (CSO transport statistics and NCT odometer data). It varies by fuel type because of who buys what — diesels are bought disproportionately by high-mileage drivers:
| Fuel type | Typical Irish mileage | 10-year-old car ≈ |
|---|---|---|
| Diesel | ~19,000 km/year | ~190,000 km |
| Petrol | ~12,500 km/year | ~125,000 km |
| Hybrid (HEV) | ~15,000 km/year | ~150,000 km |
| Plug-in hybrid | ~15,000 km/year | ~150,000 km |
| Electric (EV) | ~13,000 km/year | ~130,000 km |
These are typical ranges, not hard rules — they're the benchmark the tool uses so a diesel isn't unfairly flagged as "high mileage" for doing what diesels do. A car a long way above or below the line for its fuel type is the one worth a second look.
How to read a DoneDeal or Carzone listing
Most of a car's red flags are visible in the advert before you ever pick up the phone — you just have to know what you're looking at. This is the part newer "paste-the-link" AI tools claim to automate, but a careful human reads a listing better than a scraper, and without guessing. Run your eye over these:
“Drives perfect” with not a word about a service book, stamps or receipts usually means there aren’t any. A genuine, cared-for car gets its history mentioned because it adds value.
No engine bay, no underside, no dashboard with the odometer and warning lights, no service book. Missing angles hide problems. Stock/manufacturer photos on a private sale are a flag in themselves.
Suspiciously low km on an older car, or a very round number, deserves scrutiny. Run it through the tool above, then cross-check against NCT/MOT records — this is where clocking shows up.
Well below the going rate for the year and spec almost always hides something — outstanding finance, a write-off, a major fault, or a curbsider trying to move a problem car fast.
A seller who blanks the reg in photos and won’t give it to you is stopping you running a history check. That alone is reason to walk.
Same phone number across several listings, “selling for a friend”, meeting in a car park rather than at home, cash-only and a deposit “to hold it”. Curbsiders sell with none of the consumer protection a real dealer owes you.
These phrases change everything and are often tucked at the bottom. No NCT can mean it would fail; “trade sale” / “spares or repairs” strips your comeback rights.
A right-hand-drive bargain or a Japanese-import model with no mention of VRT paid or Irish plates means you may owe the VRT — size it on our VRT calculator before you enquire.
The ads worth your time do the opposite: full reg shown, plenty of honest photos (including the service book and any flaws), NCT date stated, owner count and history mentioned, and a seller happy for you to bring a mechanic. Transparency in the advert is the first green flag — work the checklist below to confirm it in person.
12-point used car buyer checklist
Bring this to every viewing. None of it needs special tools — just time, daylight and a willingness to walk away.
Stamped book, dealer print-out or a folder of receipts. Gaps are the single biggest red flag. Match the service dates and mileages to the odometer — they should rise consistently.
Valid NCT disc, and ask for past NCT reports — they record the odometer at each test, so you can spot a mileage that jumped backwards. Check the next NCT due date too.
Find out whether THIS exact engine uses a belt or a chain, and when it was last changed. Belts are typically due every 60,000–160,000 km OR 5–10 years — whichever comes first — but the interval is engine-specific, so check the handbook or a dealer, not a guess. A belt overdue by time is a serious risk.
Run a paid history check (Cartell.ie or Motorcheck.ie, ~€25) before you pay anything. It flags outstanding finance (you could lose the car), previous write-offs, plate changes and mileage discrepancies — none of which a listing or a free tool can confirm.
Fewer is generally better. Many owners in a short time can signal a problem car. The logbook (VLC/VRC) shows the current registered owner — confirm the seller matches.
Check tyre tread and age (date code), brake disc lip and pad wear, and on a manual the clutch bite point. These are the items high mileage eats first — factor replacement cost into your offer.
Look along sills, wheel arches, boot floor and under the bonnet for fresh underseal, mismatched paint or uneven panel gaps. Especially important on UK and Japanese imports.
The VIN on the windscreen, door pillar and logbook must all match. A mismatch is a hard stop — walk away.
Start it stone cold (ask the seller not to warm it up before you arrive). Listen for rattles, watch for smoke, and drive it at motorway speed — not just around the block.
Every dashboard light should illuminate on ignition then go out. A bulb taped over or removed is hiding a fault. Test windows, locks, A/C, lights and infotainment.
For an import, confirm VRT has been paid and the car is on Irish plates, or factor the VRT bill in. UK cars should have an MOT history (check on gov.uk by reg) showing the mileage trail.
For anything but a trivial purchase, pay for an independent pre-purchase inspection (AA Ireland or a local mechanic, ~€150–€200). It is the cheapest insurance you will ever buy on a used car.
Questions to ask the seller
The right questions surface problems before you hand over money. A straight seller answers them easily; hesitation or evasion is information too.
- Why are you selling it, and how long have you owned it?
- Is there a full service history, and can I see it?
- When was the timing belt last changed (if applicable), and at what mileage?
- Has it ever been in an accident or had bodywork done?
- Is there any outstanding finance on the car?
- Is the mileage genuine, and do you have paperwork to back it up?
- When is the NCT due, and has it ever failed a test?
- Are there any warning lights, faults or jobs it needs right now?
- Is it an import? If so, is VRT paid and is it on Irish plates?
- Can I take it to a mechanic for an independent inspection before buying?
Why you still need a paid history check
This page and the tool above help you vet the listing and the car in person. They cannot see the official records behind it. For that you need a paid history check from Cartell.ieor Motorcheck.ie (around €25), which draws on data no free tool can access:
- Outstanding finance — buy a financed car and the lender can take it back from you. This alone justifies the spend.
- Write-off / insurance total-loss history — cars written off and rebuilt.
- Mileage discrepancies — cross-referenced odometer records that flag clocking.
- Plate changes, ownership count and import status.
A €25 history check on a €12,000 car is the cheapest risk you'll ever buy down. Do it before you pay a deposit — not after.
Why we don’t scrape listings or use AI to “check” a car
A few newer tools ask you to paste a DoneDeal or Carzone link and have an AI "analyse" the car for you. We deliberately don't, and it's worth being clear why — because the gap is exactly where buyers lose money:
- An AI reading an advert can't see what actually matters. Outstanding finance, write-off history and official mileage records live in databases behind Cartell and Motorcheck — not in the ad text. A model guessing from a listing gives you confidence about the one set of risks it genuinely can't check.
- It invents the specifics. "Known faults", a "fair price", a reliability score — none of these can be derived from a listing, so they get made up. A confident wrong number on a €12,000 purchase is worse than no number at all.
- Scraping is fragile and against the sites' terms. It breaks the moment DoneDeal or Carzone change a page, and it puts you on the wrong side of their rules. We'd rather give you maths you can verify and a checklist you can act on.
Honest arithmetic on the mileage, a checklist built from official sources, and a straight pointer to the two things that actually settle it — a €25 history check and a pre-purchase inspection. No guessed prices, no invented faults, nothing scraped. If we can't know it reliably, we tell you to go and confirm it rather than fake it.
UK & Japanese imports
Imports are a big part of the Irish used market and often excellent value, but they need two extra checks. First, confirm VRT is paid and the car is on Irish plates — if not, you'll owe it (use our VRT calculator to size the bill before you commit). Second, for UK cars pull the free MOT history on gov.uk by registration: it lists the recorded mileage at every test, which is the best clocking check you can get for nothing. Inspect imports more carefully for rust (UK winter salt) and for accident repair.
Bought it? Now keep the paperwork the next buyer will want.
The thing that makes a used car easy to sell — and safe to buy — is a complete history. odo.ie is the free Irish PWA that keeps it all in one place: email reminders before NCT, motor tax and insurance expire, a full digital service history, and cost analytics showing what your car actually costs per month. Solo free forever for one vehicle, Family €4/mo for three, Pro €8/mo with a Revenue-ready trip logbook.
Sources
- CSO Ireland — Transport Omnibus / vehicle mileage statistics for average annual mileage.
- RSA / NCTS — NCT odometer records and test history.
- Cartell.ie, Motorcheck.ie — vehicle history (finance, write-off, mileage) checks.
- Citizens Information — buying a used car and consumer rights in Ireland.
- gov.uk — free MOT history check for UK-registered imports.
- AA Ireland — pre-purchase vehicle inspection service.