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SEAT Mii Ev MOT Check

MOT pass rates, common failures, and reliability data for the SEAT Mii Ev. Check any Mii Ev by registration number below.

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89.5%

Avg Pass Rate

+2.6%

vs SEAT Avg

3

Year Ranges

Excellent

Reliability

SEAT Mii Ev — MOT Reliability Overview

The SEAT Mii Ev has an average MOT pass rate of 89.5%, which is 2.6 percentage points above the SEAT brand average of 86.9%. This is a strong result, indicating that the Mii Ev is well-engineered and tends to age well mechanically. Owners can expect fewer surprises at MOT time.

The most common reasons a SEAT Mii Ev fails its MOT are a tyre seriously damaged, a suspension pin, bush or joint excessively worn, windscreen washers not working or not providing sufficient fluid to clear the windscreen. If you are preparing your Mii Ev for its MOT, checking these areas first could save you a retest fee. Our detailed fault analysis includes estimated repair costs for each failure type.

Before buying a used SEAT Mii Ev, we recommend checking the full MOT history, write-off status, outstanding finance, and stolen vehicle status. These checks can be done for free using the registration number.

MOT Pass Rate by Year

How the SEAT Mii Ev performs at MOT across different model years.

2021

Based on 1,594 vehicles

89.5%Excellent
SEAT average: 86.9%
Dangerous Defects

4.5%

Retest Rate

9.9%

Mileage at 3yr

30k mi

2020

Based on 659 vehicles

90.0%Excellent
SEAT average: 86.9%
Dangerous Defects

4.7%

Retest Rate

11.0%

Mileage at 3yr

23k mi

Mileage at 5yr

22k mi

0

Based on 336 vehicles

89.0%Excellent
SEAT average: 86.9%
Mileage at 5yr

14k mi

Top MOT Failures — SEAT Mii Ev

The most common reasons a SEAT Mii Ev fails its MOT, aggregated across all year ranges.

1

A tyre seriously damaged

3.1%
2

A suspension pin, bush or joint excessively worn

1.1%
3

Windscreen washers not working or not providing sufficient fluid to clear the windscreen

1.1%
4

The aim of a headlamp is not within limits laid down in the requirements

0.9%
5

A shock absorber damaged to the extent that it does not function or showing signs of severe leakage

0.9%
SEAT Mii Ev Common Faults & Repair Costs

Where Failures Occur

The areas of the vehicle most commonly flagged during MOT inspections.

Front Nearside

4.7%

Front Offside

2.9%

Rear Nearside

1.1%

Other SEAT Models

Compare MOT reliability across SEAT models.

SEAT Marbella

87.5% pass rate

SEAT Leon Xcellence Tsi Evo

94.0% pass rate

SEAT Ibiza

88.2% pass rate

SEAT MII

87.3% pass rate

SEAT Leon Fr Black Edition Tdi S-a

89.5% pass rate

SEAT Ateca Xperience Tdi 4drive S-a

100.0% pass rate

Useful MOT Guides

Common MOT Failures

The most common reasons UK vehicles fail their MOT — and how to prepare.

MOT Checklist

Pre-MOT checklist to improve your chances of passing first time.

Advisory vs Failure

Understanding the difference between MOT advisories and failures.

See detailed fault analysis for SEAT Mii Ev

SEAT Mii Ev — Frequently Asked Questions

Common questions about the SEAT Mii Ev MOT and reliability.

What is the MOT pass rate for the SEAT Mii Ev?
The average MOT pass rate for the SEAT Mii Ev is 89.5% compared to the SEAT average of 86.9%. Pass rates vary by year — check the year-by-year breakdown on this page for details.
What are the most common MOT failures on a SEAT Mii Ev?
The most common MOT failures on the SEAT Mii Ev are: A tyre seriously damaged (3.1%), A suspension pin, bush or joint excessively worn (1.1%), Windscreen washers not working or not providing sufficient fluid to clear the windscreen (1.1%). These are the components most likely to cause an MOT failure.
Is the SEAT Mii Ev reliable?
With an average MOT pass rate of 89.5%, the SEAT Mii Ev is rated as "Excellent" for reliability. This is a strong result suggesting good build quality and fewer common defects.
How do I check the MOT history of a SEAT Mii Ev?
Enter the vehicle's registration number in the search box at the top of this page. You will instantly see the complete MOT history including every test result, mileage readings, advisories, and dangerous defects — completely free.
What mileage should I expect on a SEAT Mii Ev?
Typical mileage for the SEAT Mii Ev: 30,330 miles at 3 years. Use these benchmarks when evaluating a used Mii Ev to spot vehicles with unusually high or low mileage.

Check Your SEAT Mii Ev's MOT History

Enter the registration number for the full MOT history — free and instant.

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