Should I check the MOT history before buying a 2021 Isuzu D Max Dl20?

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 2021 Isuzu D Max Dl20?

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 2021 Isuzu D Max Dl20?

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.

Is the 2021 Isuzu D Max Dl20 reliable?

Based on MOT data from 494 vehicles, the 2021 Isuzu D Max Dl20 has a first-time MOT pass rate of 89%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

Do I need an HPI check when buying a 2021 Isuzu D Max Dl20?

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.

CarHunch

Get Started

Isuzu D Max Dl20 (2021)

494 real MOT outcomes analysed • 89% first-time pass rate

2021 Isuzu D Max Dl20

CarHunch analysed 494 real MOT records for the 2021 Isuzu D Max Dl20. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

On this page

AI Analysis Reliability Overview Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution MOT Averages Colour Breakdown Compare Models

Moderate sample. 494 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

The 2021 Isuzu D-Max DL20 passes its MOT first time in 87.4% of cases, comfortably ahead of the UK average of 80%, and only 7.7% have ever recorded a dangerous defect—well below the threshold that would flag serious reliability concerns. This is a diesel-only lineup, and that consistent 87.5% pass rate tells you the engine and emissions systems are holding up well across the board.

At nearly 40,000 miles median mileage for a three-year-old truck, these are working vehicles, yet they're averaging just 0.35 failures per MOT and 1.8 advisories, suggesting the D-Max is both robust and well-maintained by its owners. If you're considering one, check the service history carefully and budget for routine wear items rather than structural problems—this model has earned its reputation as a dependable workhorse.

The 2021 Isuzu D Max Dl20 passes its MOT first time more often than most UK vehicles (89% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ Around 1 in 20 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.

First-time pass

89%

UK average ~80%

Better than average

Dangerous (ever)

7.7%

At least once in MOT history

Check this vehicle

Avg failures / car

0.35

Over 2.3 tests on record

Low

Typical mileage

40k

Middle half: 27k–59k

For context

✅ Good baseline reliability. A 89% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

🔧 Expect consumable spend. An average of 1.8 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.

🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 494 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.

A solid choice — agree?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 494 Isuzu D Max Dl20 cars.

Before you buy a 2021 Isuzu D Max Dl20

Based on MOT data from 494 vehicles — here's what to check.

📋 Check the full MOT history. 7.7% 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
Diesel (100%)	493	89.1%	0.34

Colour Breakdown

Based on 2,337 Isuzu D Max Dl20 vehicles registered in the UK — across all years. From DVLA registration records.

Grey 29.3%

685

White 23.4%

546

Silver 22.3%

521

Black 14.6%

342

Red 10.4%

243

Mileage Distribution

Most 2021 Isuzu D Max Dl20 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.

39,769

typical

26,956

low mileage

58,832

high mileage

Half of all 2021 Isuzu D Max Dl20 vehicles fall between 26,956 and 58,832 miles.

Is the mileage you're seeing normal?

✓ Under 26,956 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.

✓ 26,956–58,832 miles — normal for age. This is where most 2021 Isuzu D Max Dl20s sit.

⚠ Over 79,423 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

MOT History Averages

2.3

Avg MOT tests per vehicle

0.35

Avg failures per vehicle

1.8

Avg advisories per vehicle

Other model years — Isuzu D Max Dl20: All D Max Dl20 years → Which year to buy? →

2022 2023 2024 2025

Or browse all models: Isuzu →

Compare with another model

See how the 2021 Isuzu D Max Dl20 stacks up against a rival.

A solid choice — agree?