Isuzu D Max Dl20 Auto (2021)

152 real MOT outcomes analysed • 83.4% first-time pass rate

2021 Isuzu D Max Dl20 Auto

CarHunch analysed 152 real MOT records for the 2021 Isuzu D Max Dl20 Auto. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

The 2021 Isuzu D-Max DL20 Auto passes its MOT on the first attempt 83.4% of the time, which is a solid 3.4 percentage points above the UK average—this pickup truck is proving more reliable than typical for its age. The 12.5% rate of dangerous defects is moderate and not a major red flag, though buyers should still factor in potential safety-critical repairs.

At 52,843 miles average, these vehicles are running a touch above typical mileage for their age, yet they're averaging just 0.51 failures per test, suggesting the extra miles haven't taken much of a toll. The real-world picture is one of minor niggles: advisories average 1.9 per vehicle, mostly low-cost wear items. When shopping, have a pre-purchase inspection focus on the suspension and braking components—the staples of pickup truck wear—to catch small issues before they compound.

Average reliability 3.4% above UK average
83.4%
pass MOT first time
UK average: ~80%
45,316
typical mileage
32,816–66,302 middle half
12.5%
ever had a dangerous defect
recorded at any MOT
0.51
avg MOT failures per car
over 2.4 tests on record

What to check before buying a 2021 Isuzu D Max Dl20 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 Isuzu D Max Dl20 Auto

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

Inspection ClickMechanic Have a qualified mechanic check this car before you commit to buying

CarHunch may earn a small commission if you buy via these links — at no extra cost to you.

Mileage Distribution

Most 2021 Isuzu D Max Dl20 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.

32,816
low mileage
45,316
typical
66,302
high mileage

Half of all 2021 Isuzu D Max Dl20 Auto vehicles fall between 32,816 and 66,302 miles.

MOT History Averages

2.4
Avg MOT tests per vehicle
0.51
Avg failures per vehicle
1.9
Avg advisories per vehicle

Found a specific Isuzu D Max Dl20 Auto?

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

UK

Other model years — Isuzu D Max Dl20 Auto:

2022 2023 2024