Mazda CX-5 Sport D Auto (2021)

Estimated running costs and MOT pass rates from 187 MOT tests in 2024.

Annual Cost

£2,131

£178/month

MOT Pass Rate

94%

Excellent

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 25-38

2191cc Diesel

Great Choice

94% pass rate, £2,131/year to run. 12 points above average.

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Diesel2191cc5 years old187 tests33k miles avg

Annual Running Costs

Fuel (Diesel, 2191cc)

~40 mpg

£1,676

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£2,131

Per month£178/mo

Per week£41/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

94% MOT pass rate(Excellent)

0%All-model avg: 82%100%

Excellent reliability. Very few MOT failures. That's 12 points above the average of 82% across all models in our data. It also outperforms the Mazda brand average of 81%.

94% of MOT tests on Mazda CX-5 Sport D Autos from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 187 tests across the UK, retests included. The average mileage recorded at those tests was 33,133 miles.

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How Does It Compare?

Rank among 2021 models1288th of 3,336(top half)

Rank among Mazda models124th of 459(top half)

vs average of all models+12%(82% avg)

vs 2021 models average+2%(92% avg)

vs Mazda average+13%(81% avg)

Mileage Analysis

33,133

Average miles

22,200

Expected for age

The average 2021 Mazda CX-5 Sport D Auto had 33,133 miles on the clock at its 2024 MOT, which is above the expected 22,200 miles for a 3-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.

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Mazda CX-5 Sport D Auto by Year

Year	Pass Rate	Tests	Avg Mileage
2021	94%	187	33,133 mi
2020	93%	174	42,817 mi

Similar Cars to Consider

Ford Kuga

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Volkswagen T-Roc

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About the 2021 Mazda CX-5 Sport D Auto

The 2021 Mazda CX-5 Sport D Auto is a family car. Our records list a 2191cc diesel engine, though engines vary between versions. 187 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. Among all models from 2021, the average MOT pass rate is 92%, and this model beats that benchmark.

With an average of 33,133 miles recorded at its 2024 MOT tests, Mazda CX-5 Sport D Auto owners cover more miles than the average driver.

2021 Mazda CX-5 Sport D Auto Fuel Costs

The 2191cc diesel engine offers a reasonable balance between performance and economy. Expect around 40 mpg in mixed driving, which works out to roughly £1,676 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 2021 Mazda CX-5 Sport D Auto?

Total estimated annual running cost is £2,131 (£178/month), broken down as £1,676 fuel, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 94% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

Buying a Used 2021 Mazda CX-5 Sport D Auto

At 5 years old, the Mazda CX-5 Sport D Auto 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

Low risk

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

Dual Mass Flywheel

Medium risk

Larger diesel engines put extra strain on the dual mass flywheel. Listen for rattling at idle. Replacement with clutch is £800-£1,500.

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 2021 Mazda CX-5 Sport D Auto 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
Mazda CX-5 Sport D Auto(2021)	94%	£1,676	£200	Grp 25-38	£2,131
Ford Kuga(2019)	91%	£1,397	£200	Grp 18-32	£1,852-£279
BMW 118(2020)	93%	£1,397	£200	Grp 18-32	£1,852-£279
Volkswagen T-Roc(2019)	94%	£1,397	£200	Grp 18-32	£1,852-£279
BMW 1 Series(2019)	91%	£1,397	£200	Grp 18-32	£1,852-£279

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 2021 Mazda CX-5 Sport D Auto

Is the 2021 Mazda CX-5 Sport D Auto reliable?

Excellent reliability. Very few MOT failures. 94% of MOT tests on 2021 Mazda CX-5 Sport D Autos ended in a pass, from 187 tests (DVSA MOT data for tests in 2024, retests included). That's 12 points above the average of 82% across all models in the same data.

How much does a 2021 Mazda CX-5 Sport D Auto cost to run?

Our estimate is £2,131 a year (£178 a month): £1,676 fuel, £200 road tax, £55 MOT and £200 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2021 Mazda CX-5 Sport D Auto?

94% of 187 MOT tests on the 2021 Mazda CX-5 Sport D Auto ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 1288th of 3,336 models first registered in 2021 (top half).

Which year Mazda CX-5 Sport D Auto has the best MOT pass rate?

Of the years with at least 100 tests, the 2021 Mazda CX-5 Sport D Auto has the highest MOT pass rate at 94% and the 2020 the lowest at 93%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2021 Mazda CX-5 Sport D Auto?

The average mileage recorded at MOT tests on the 2021 Mazda CX-5 Sport D Auto is 33,133 miles, which is above the expected 22,200 miles for a 3-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.