Should I check the MOT history before buying a 1984 Renault 18 Diesel?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 1984 Renault 18 Diesel?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 1984 Renault 18 Diesel?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

Do I need an HPI check when buying a 1984 Renault 18 Diesel?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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Renault 18 Diesel (1984)

1,087 real MOT outcomes analysed • 0.1% first-time pass rate

1984 Renault 18 Diesel

CarHunch analysed 1,087 real MOT records for the 1984 Renault 18 Diesel. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

Below average reliability 79.9% below UK average

0.1%

pass MOT first time

UK average: ~80%

152,316

typical mileage

152,316–152,316 middle half

ever had a dangerous defect

recorded at any MOT

avg MOT failures per car

over 1 tests on record

What to check before buying a 1984 Renault 18 Diesel

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.
📄 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 Renault 18 Diesel

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

Inspection

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Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Diesel (98%)	1,060	0.1%	0
Petrol (2%)	27	0%	0

Mileage Distribution

Most 1984 Renault 18 Diesel 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.

152,316

low mileage

152,316

typical

152,316

high mileage

Half of all 1984 Renault 18 Diesel vehicles fall between 152,316 and 152,316 miles.

MOT History Averages

Avg MOT tests per vehicle

Avg failures per vehicle

Avg advisories per vehicle

Found a specific Renault 18 Diesel?

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

Other model years — Renault 18 Diesel:

1981 1982 1983 1985