Isuzu D-Max (2020)

Estimated running costs and MOT pass rates from 4,081 MOT tests in 2024.

Annual Cost

£2,002

£167/month

MOT Pass Rate

86%

Good

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 18-32

1898cc Diesel

Solid Option

86% pass rate, £2,002/year to run. Close to the average across all models.

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Diesel1898cc6 years old4,081 tests51k miles avg

Annual Running Costs

Fuel (Diesel, 1898cc)

~48 mpg

£1,397

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

£350

Total per year£2,002

Per month£167/mo

Per week£39/wk

Estimates based on 7,400 miles/year (UK average), diesel at 199.33p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).

Reliability Verdict

86% MOT pass rate(Good)

0%All-model avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the average of 82% across all models in our data. It also outperforms the Isuzu brand average of 78%.

86% of MOT tests on Isuzu D-Maxs from 2020 ended in a pass in 2024, when they were about 4 years old. That's based on 4,081 tests across the UK, retests included. The average mileage recorded at those tests was 50,699 miles.

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How Does It Compare?

Rank among 2020 models2253rd of 2,554(bottom 12%)

Rank among Isuzu models15th of 101(top 15%)

vs average of all models+4%(82% avg)

vs 2020 models average-6%(92% avg)

vs Isuzu average+8%(78% avg)

Mileage Analysis

50,699

Average miles

29,600

Expected for age

The average 2020 Isuzu D-Max had 50,699 miles on the clock at its 2024 MOT, which is well above the expected 29,600 miles for a 4-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.

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Isuzu D-Max by Year

Year	Pass Rate	Tests	Avg Mileage
2021	85%	425	43,288 mi
2020	86%	4,081	50,699 mi
2019	85%	6,757	60,513 mi
2018	83%	6,944	70,377 mi
2017	80%	8,046	79,026 mi
2016	80%	8,126	85,358 mi
2015	80%	9,155	93,650 mi
2014	78%	7,436	102,510 mi
2013	77%	1,074	102,841 mi
2012	75%	109	112,031 mi

Similar Cars to Consider

Volkswagen Golf

2018 · 1968cc Diesel

£1,852/year

92%

+6%

Ford Focus

2019 · 1499cc Diesel

£1,824/year

89%

+3%

Mercedes A

2019 · 1461cc Diesel

£1,674/year

91%

+5%

Mercedes A-Class

2018 · 1461cc Diesel

£1,824/year

89%

+3%

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About the 2020 Isuzu D-Max

The 2020 Isuzu D-Max is a family car. Our records list a 1898cc diesel engine, though engines vary between versions. 4,081 MOT tests were recorded on this model in 2024, making it a reasonably common sight on UK roads. It sits in the bottom 12% of 2020 models for MOT pass rate.

With an average of 50,699 miles recorded at its 2024 MOT tests, Isuzu D-Max owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.

2020 Isuzu D-Max Fuel Costs

The 1898cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,397 per year with diesel at 199.33p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.

What does it cost to own a 2020 Isuzu D-Max?

Total estimated annual running cost is £2,002 (£167/month), broken down as £1,397 fuel, £200 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 86% pass rate. Keeping on top of servicing will help avoid surprises.

Isuzu D-Max Reliability Trend

Newer Isuzu D-Maxs pass their MOT more often than older ones, by 6 percentage points on average, which is mostly down to age and wear.

Buying a Used 2020 Isuzu D-Max

At 6 years old, the Isuzu D-Max offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.

Common Issues to Watch For

These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.

DPF (Diesel Particulate Filter)

Watch out

Short journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.

Turbo Wear

Medium risk

Diesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.

AdBlue System

Medium risk

Post-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.

EGR Valve

Watch out

Exhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2020 Isuzu D-Max stacks up against similar cars for estimated annual running costs, insurance group, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Est. Ins. Group	Total/yr
Isuzu D-Max(2020)	86%	£1,397	£200	Grp 18-32	£2,002
Volkswagen Golf(2018)	92%	£1,397	£200	Grp 18-32	£1,852-£150
Ford Focus(2019)	89%	£1,219	£200	Grp 12-25	£1,824-£178
Mercedes A(2019)	91%	£1,219	£200	Grp 12-25	£1,674-£328
Mercedes A-Class(2018)	89%	£1,219	£200	Grp 12-25	£1,824-£178

Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.

Questions about the 2020 Isuzu D-Max

Is the 2020 Isuzu D-Max reliable?

Good reliability. Occasional issues but generally solid. 86% of MOT tests on 2020 Isuzu D-Maxs ended in a pass, from 4,081 tests (DVSA MOT data for tests in 2024, retests included). That's 4 points above the average of 82% across all models in the same data.

How much does a 2020 Isuzu D-Max cost to run?

Our estimate is £2,002 a year (£167 a month): £1,397 fuel, £200 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2020 Isuzu D-Max?

86% of 4,081 MOT tests on the 2020 Isuzu D-Max ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 2253rd of 2,554 models first registered in 2020 (bottom 12%).

Which year Isuzu D-Max has the best MOT pass rate?

Of the years with at least 100 tests, the 2020 Isuzu D-Max has the highest MOT pass rate at 86% and the 2012 the lowest at 75%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2020 Isuzu D-Max?

The average mileage recorded at MOT tests on the 2020 Isuzu D-Max is 50,699 miles, which is well above the expected 29,600 miles for a 4-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.