SEAT Ateca (2018)

Estimated running costs and MOT pass rates from 14,880 MOT tests in 2024.

Annual Cost

£1,674

£140/month

MOT Pass Rate

90%

Excellent

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 12-25

1598cc Diesel

Great Choice

90% pass rate, £1,674/year to run. 8 points above average.

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Diesel1598cc8 years old14,880 tests51k miles avg

Annual Running Costs

Fuel (Diesel, 1598cc)

~55 mpg

£1,219

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£1,674

Per month£140/mo

Per week£32/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

90% MOT pass rate(Excellent)

0%All-model avg: 82%100%

Excellent reliability. Very few MOT failures. That's 8 points above the average of 82% across all models in our data. It also outperforms the SEAT brand average of 85%.

90% of MOT tests on SEAT Atecas from 2018 ended in a pass in 2024, when they were about 6 years old. That's based on 14,880 tests across the UK, retests included. The average mileage recorded at those tests was 51,204 miles.

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How Does It Compare?

Rank among 2018 models301st of 607(top half)

Rank among SEAT models124th of 310(top half)

vs average of all models+8%(82% avg)

vs 2018 models average+1%(89% avg)

vs SEAT average+5%(85% avg)

Mileage Analysis

51,204

Average miles

44,400

Expected for age

The average 2018 SEAT Ateca had 51,204 miles on the clock at its 2024 MOT, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.

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Best Year to Buy?

Of the years with at least 100 tests, the 2019 model has the highest MOT pass rate at 93%, while the 2021 model has the lowest at 90%. The 2018 scores 90%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

SEAT Ateca by Year

Year	Pass Rate	Tests	Avg Mileage
2023	84%	55	27,079 mi
2022	93%	155	32,936 mi
2021	90%	2,977	28,548 mi
2020	93%	9,720	32,881 mi
2019	93%	18,563	41,255 mi
2018	90%	14,880	51,204 mi
2017	90%	15,933	59,237 mi
2016	91%	3,211	67,159 mi

Similar Cars to Consider

Volkswagen Golf

2017 · 1598cc Diesel

£1,674/year

91%

+1%

Ford Focus

2019 · 1499cc Diesel

£1,824/year

89%

-1%

Mercedes A

2019 · 1461cc Diesel

£1,674/year

91%

+1%

Mercedes A-Class

2017 · 1461cc Diesel

£1,824/year

88%

-2%

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About the 2018 SEAT Ateca

The 2018 SEAT Ateca is a small family car. Our records list a 1598cc diesel engine, though engines vary between versions. 14,880 MOT tests were recorded on this model in 2024, making it one of the most commonly tested models on UK roads. Among all models from 2018, the average MOT pass rate is 89%, and this model beats that benchmark.

With an average of 51,204 miles recorded at its 2024 MOT tests, SEAT Ateca owners drive about as much as the UK average.

2018 SEAT Ateca Fuel Costs

The 1598cc diesel engine offers a reasonable balance between performance and economy. Expect around 55 mpg in mixed driving, which works out to roughly £1,219 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 2018 SEAT Ateca?

Total estimated annual running cost is £1,674 (£140/month), broken down as £1,219 fuel, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 90% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

SEAT Ateca Reliability Trend

The SEAT Ateca has maintained consistent MOT pass rates across model years, varying by only 2 percentage points.

Buying a Used 2018 SEAT Ateca

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 2019 model has the highest pass rate at 93%. With 14,880 MOT tests in our data, there's strong statistical confidence in these figures.

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

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 SEAT Ateca 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
SEAT Ateca(2018)	90%	£1,219	£200	Grp 12-25	£1,674
Volkswagen Golf(2017)	91%	£1,219	£200	Grp 12-25	£1,674same
Ford Focus(2019)	89%	£1,219	£200	Grp 12-25	£1,824+£150
Mercedes A(2019)	91%	£1,219	£200	Grp 12-25	£1,674same
Mercedes A-Class(2017)	88%	£1,219	£200	Grp 12-25	£1,824+£150

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 2018 SEAT Ateca

Is the 2018 SEAT Ateca reliable?

Excellent reliability. Very few MOT failures. 90% of MOT tests on 2018 SEAT Atecas ended in a pass, from 14,880 tests (DVSA MOT data for tests in 2024, retests included). That's 8 points above the average of 82% across all models in the same data.

How much does a 2018 SEAT Ateca cost to run?

Our estimate is £1,674 a year (£140 a month): £1,219 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 2018 SEAT Ateca?

90% of 14,880 MOT tests on the 2018 SEAT Ateca ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 301st of 607 models first registered in 2018 (top half).

Which year SEAT Ateca has the best MOT pass rate?

Of the years with at least 100 tests, the 2019 SEAT Ateca has the highest MOT pass rate at 93% and the 2021 the lowest at 90%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2018 SEAT Ateca?

The average mileage recorded at MOT tests on the 2018 SEAT Ateca is 51,204 miles, which is in line with the expected 44,400 miles for a 6-year-old car, suggesting normal everyday use.