How much does a 2018 ISUZU D-MAX cost to run?

Estimated annual running cost is £1,637 (£136/month), including £1037 fuel, £195 road tax, £55 MOT, and £350 predicted repairs.

What is the MOT pass rate for a 2018 ISUZU D-MAX?

The 2018 ISUZU D-MAX has a 83% MOT pass rate based on 6,944 tests in 2026. This ranks 579 out of 649 cars from 2018.

Which year ISUZU D-MAX is most reliable?

The 2020 ISUZU D-MAX has the highest MOT pass rate at 86%. The least reliable year is 2012 at 75%.

What is the average mileage for a 2018 ISUZU D-MAX?

The average mileage for a 2018 ISUZU D-MAX is 70,377 miles, which is in line with the expected 59,200 miles for a 8-year-old car, suggesting normal everyday use.

ISUZU D-MAX (2018)

Q: Is the 2018 ISUZU D-MAX reliable?

Good reliability. Occasional issues but generally solid. 83% of ISUZU D-MAXs from 2018 passed their MOT first time in 2026, based on 6,944 tests. That's 1 points above the national average of 82%.

Running costs, reliability data, and common problems from 6,944 real MOT tests.

Annual Cost

£1,637

£136/month

MOT Pass Rate

83%

Good

Road Tax

£195

Flat rate/year

Insurance

Grp 18-32

1898cc Diesel

Solid Option

83% pass rate, £1637/year to run. Close to the national average.

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Diesel1898cc8 years old6,944 tests70k miles avg

Annual Running Costs

Fuel (Diesel, 1898cc)

~48 mpg

£1,037

Road Tax

Flat rate (post-2017)

£195

MOT Test

£55

Predicted Repairs

£350

Total per year£1,637

Per month£136/mo

Per week£31/wk

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.

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Reliability Verdict

83% MOT pass rate(Good)

0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It also outperforms the ISUZU brand average of 78%.

At 8 years old, 83% of ISUZU D-MAXs from 2018 passed their MOT first time in 2026. That's based on 6,944 tests across the UK. The average mileage at this age is 70,377 miles.

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How Does It Compare?

Rank among 2018 cars579th of 649(top 89%)

Rank among ISUZU models21th of 101(top 21%)

vs national average+1%(82% avg)

vs 2018 cars average-6%(89% avg)

vs ISUZU average+5%(78% avg)

Mileage Analysis

70,377

Average miles

59,200

Expected for age

The average 2018 ISUZU D-MAX has 70,377 miles on the clock, which is in line with the expected 59,200 miles for a 8-year-old car, suggesting normal everyday use.

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Best Year to Buy?

The most reliable year is the 2020 model with a 86% MOT pass rate, while the 2012 model has the lowest at 75%. The 2018 sits between the two at 83%.

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

2017 · 1598cc Diesel

£1,350/year

91%

+8%

FORD FOCUS

2019 · 1499cc Diesel

£1,500/year

89%

+6%

MERCEDES A

2019 · 1461cc Diesel

£1,350/year

91%

+8%

MERCEDES A-CLASS

2017 · 1461cc Diesel

£1,500/year

88%

+5%

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About the 2018 ISUZU D-MAX

The 2018 ISUZU D-MAX is a family car with a 1898cc diesel engine. 6,944 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. It sits in the bottom 89% of 2018 cars for MOT pass rates.

With an average of 70,377 miles at 8 years old, ISUZU D-MAX owners drive about as much as the UK average.

2018 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 £1,037 per year at current diesel prices of 148p per litre (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 2018 ISUZU D-MAX?

Total estimated annual running cost is £1,637 (£136/month), broken down as £1037 fuel, £195 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 83% pass rate. Keeping on top of servicing will help avoid surprises.

ISUZU D-MAX Reliability Trend

Newer ISUZU D-MAXs show better MOT pass rates than older ones, with an average improvement of 6 percentage points.

Buying a Used 2018 ISUZU D-MAX

At 8 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2020 model has the highest pass rate at 86%. With 6,944 MOT tests in our data, there's strong statistical confidence in these figures.

Common Issues to Watch For

Based on the 2018 ISUZU D-MAX's fuel type, age, and engine size, these are the most likely problem areas to check.

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

Watch out

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.

Suspension Wear

Medium risk

Shock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.

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 2018 ISUZU D-MAX stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
ISUZU D-MAX(2018)	83%	£1037	£195	Grp 18-32	£1637
VOLKSWAGEN GOLF(2017)	91%	£905	£190	Grp 12-25	£1350-£287
FORD FOCUS(2019)	89%	£905	£190	Grp 12-25	£1500-£137
MERCEDES A(2019)	91%	£905	£190	Grp 12-25	£1350-£287
MERCEDES A-CLASS(2017)	88%	£905	£190	Grp 12-25	£1500-£137

Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.