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Ineos Reliability UK 2026

How reliable is a Ineos? Here’s a data-led reliability profile based on first-time MOT pass rates, model-level breakdown, top failure categories, and a buyer’s verdict.

By Bertram Sargla, Founder, MOT CheckupLast updated: 2026-05-16Data sourced from DVSA

Ineos reliability snapshot: first-time MOT pass rate 82.8% (+18.8 pp vs the UK average of 64%). Across 1 Ineos models, the typical dangerous-defect rate is 1.5% and the average retest rate is 12%. Ineos sits well above the UK average on first-time MOT performance. For a buyer focused on long-term reliability, it's a solid badge — though individual mileage and service history still matter more than brand.

Ineos first-time MOT pass rate

82.8%

Implied failure rate: 17.2% · UK average pass rate: 64%

vs UK average

+18.8 pp

Dangerous defects

1.5%

Retest rate

12%

How Ineos compares to the UK average

The UK national first-time MOT pass rate is 64%, with about 36% of cars failing on the first attempt.Ineos’s pass rate of 82.8% is 18.8 percentage points above that benchmark. That ’s a brand-average figure — individual Ineos models range from the high 60s to above 90%, so model and age matter more than the badge.

Ineos pass rate82.8%
UK average pass rate64%

Run a free MOT check on a specific Ineos

Brand averages set expectations — a single car’s history is what actually decides whether it’s worth buying.

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Free instant MOT history check at /free-mot-check.

Top MOT failure categories for Ineos

Aggregated across 1 Ineos models in our dataset, weighted by sample size.

1

Lamps, reflectors and electrical equipment

14%
2

Suspension

13%
3

Brakes

11.5%
4

Tyres

9.5%
5

Exhaust, fuel and emissions

7.5%

Related reading

Ineos MOT check

Per-model pass rates and free registration lookup.

Ineos common faults

Detailed fault list and indicative repair costs.

Ineos pass rate 2025

Most-recent year-keyed pass rate analysis.

Maxus reliability

Brand often cross-shopped against Ineos.

Hyundai reliability

Brand often cross-shopped against Ineos.

Rolls-Royce reliability

Brand often cross-shopped against Ineos.

Ineos reliability — FAQ

Is Ineos a reliable car brand in the UK?
Ineos's first-time MOT pass rate of 82.8% is above the UK national average of 64%, putting it in the stronger half of brands for MOT reliability. We track 1 Ineos models in our dataset.
What is the most reliable Ineos model for MOT?
We don't have enough sample-size in our dataset to single out the most reliable Ineos model — but in general, newer petrol and EV examples outperform older diesels.
Which Ineos models fail their MOT most often?
Sample sizes are too thin in our dataset to confidently single out the worst-performing Ineos models. The full MOT history of the specific car is the best signal.
What are the most common MOT failures on a Ineos?
Aggregated across Ineos models, the most common MOT failure categories are: lamps, reflectors and electrical equipment (14%), suspension (13%), brakes (11.5%). These align with the national pattern; lighting, suspension, and tyre defects dominate UK MOT failures across most brands.

Check a Ineos’s MOT history

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Source: MOT Checkup analysis of DVSA MOT test data. Brand-average pass rate is sample-size weighted across 1 Ineos models in our dataset. Individual cars vary considerably — always check the specific registration’s MOT history before buying.