Daimler 4.2 Auto (1984)

252 real MOT outcomes analysed • 8.2% first-time pass rate

1984 Daimler 4.2 Auto

CarHunch analysed 252 real MOT records for the 1984 Daimler 4.2 Auto. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

This 1984 Daimler 4.2 is a reliability nightmare by modern standards: only 8.2% pass the MOT first time, compared to the UK average of 80%. The good news is that dangerous defects are rare at 2.8%, so while these cars fail frequently, they're not actively unsafe—just chronically needy.

At around 100,000 miles median, these vehicles are showing their age predictably, and the pattern of 0.26 failures and 0.8 advisories per test tells you to expect constant small repairs rather than one catastrophic fault. If you're considering one, budget for regular workshop visits and treat it as a hobby car rather than a daily driver—these Daimlers demand patience and money.

Below average reliability 71.8% below UK average
8.2%
pass MOT first time
UK average: ~80%
101,137
typical mileage
85,640–125,277 middle half
2.8%
ever had a dangerous defect
recorded at any MOT
0.26
avg MOT failures per car
over 1.9 tests on record

What to check before buying a 1984 Daimler 4.2 Auto

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 Daimler 4.2 Auto

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

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Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Petrol (99%) 250 8.1% 0.26
Other (0%) 1 50% 1
Diesel (0%) 1 0% 0

Mileage Distribution

Most 1984 Daimler 4.2 Auto 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.

85,640
low mileage
101,137
typical
125,277
high mileage

Half of all 1984 Daimler 4.2 Auto vehicles fall between 85,640 and 125,277 miles.

MOT History Averages

1.9
Avg MOT tests per vehicle
0.26
Avg failures per vehicle
0.8
Avg advisories per vehicle

Found a specific Daimler 4.2 Auto?

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

UK

Other model years — Daimler 4.2 Auto:

1985 1986