Opel Manta (1984)
1984 Opel Manta
CarHunch analysed 350 real MOT records for the 1984 Opel Manta.
Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →
Moderate sample. 350 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.
The 1984 Opel Manta falls slightly below the UK average with a 77.6% first-time pass rate compared to 80%, suggesting modest reliability challenges typical of 40-year-old cars. Dangerous defects are rare at 3.7%, so safety isn't a primary concern with these vehicles.
These Mantas are running at a median of 48,454 miles, which is genuinely low for their age and points to careful ownership; the 0.68 average failures per vehicle indicates the failures that do occur are fairly isolated rather than systemic. With 2.1 advisories per test, you're looking at the steady wear items you'd expect on classics of this era—fluids, seals, trim—so budget for regular maintenance rather than major repairs, and always get a pre-purchase inspection to check the welding and underside, as rust is the real enemy of a 40-year-old Opel.
The 1984 Opel Manta passes its MOT first time at roughly the UK average rate (77.6%) — solid but worth checking this vehicle's history carefully.
These stats describe 350 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.
What tends to go wrong
Across 350 vehicles — figures show how many had each issue flagged at least once in their MOT history.
Data covers a 3-year window centred on 1984.
See this vehicle's full MOT history & AI hunches
Spot recurring advisories, hidden issues, and how it compares to 350 Opel Manta cars.
Before you buy a 1984 Opel Manta
Based on MOT data from 350 vehicles — here's what to check.
-
📋
Check the full MOT history.
3.7% of these vehicles have had a dangerous defect recorded -
recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle. -
🔍
Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price.
Inspection
→
-
📄
Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically.
History
Get 20% off via CarHunch
Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (100%) | 349 | 77.5% | 0.68 |
Colour Breakdown
Based on 3,054 Opel Manta vehicles registered in the UK — across all years. From DVLA registration records.
Mileage Distribution
Most 1984 Opel Manta vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 1984 Opel Manta vehicles fall between 21,241 and 71,759 miles.
1984 Opel Manta — Still on the Road
Numbers are thinning — 55% of 1984 Opel Mantas are still active.
22 vehicles still getting MOTs in 2025 — 55% of the peak remain.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.
MOT History Averages
Or browse all models: Opel →
Compare with another model
See how the 1984 Opel Manta stacks up against a rival.