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BYD Seal Common Problems, Faults & Repair Costs (2026)

Based on official DVSA MOT test data. View the most common MOT failure categories, pass rates, and estimated repair costs for the BYD Seal (2023–present).

MOT Pass Rate

91.0%9.0% above national avg (82%)

Reliability rating: Excellent — based on approx. 1,500 tests

Dangerous Defects

0.70%

Low risk

Retest Rate

6.5%

of failed tests need a retest

Top MOT Failure Categories

1

Lamps, reflectors and electrical equipment

Est. repair: £40–£200

9.8%
2

Suspension

Est. repair: £120–£450

7.5%
3

Brakes

Est. repair: £100–£350

7.0%
4

Tyres

Est. repair: £50–£120 per tyre

8.2%
5

Exhaust, fuel and emissions

Est. repair: £40–£200

1.5%

Where Faults Occur

25.0%

Front

23.0%

Rear

17.0%

Offside

Mileage Benchmarks

At 3 years

N/A

At 5 years

N/A

At 10 years

N/A

Significantly higher or lower mileage than these benchmarks may indicate unusual usage patterns. Check the full MOT history for mileage consistency.

Is a BYD Seal a Good Buy?

The BYD Seal demonstrates above-average reliability based on MOT test data, with a 91.0% pass rate. This places it 9.0% above the national average, suggesting lower ongoing maintenance costs compared to many competitors.

While no car is without faults, lamps, reflectors and electrical equipment issues are the most common concern, affecting approximately 9.8% of failed tests. These tend to be relatively affordable to fix at £30–£150.

BYD Seal MOT Check & History

View detailed MOT pass rates by year, mileage benchmarks, and full test history data for the BYD Seal.

View BYD Seal MOT Data

Check a Specific BYD Seal

Enter a registration number to view the full MOT history for any BYD Seal.

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Other BYD Models

BYD Atto 3

89.5%

Lamps, reflectors and electrical equipment →

BYD Dolphin

90.2%

Lamps, reflectors and electrical equipment →

View all BYD models

Frequently Asked Questions

What are the most common MOT faults on a BYD Seal?
The top MOT failure on the BYD Seal is Lamps, reflectors and electrical equipment, accounting for approximately 9.8% of all failures. Other common issues include suspension and brakes.
What is the BYD Seal MOT pass rate?
The BYD Seal has an estimated MOT pass rate of 91.0%, which is 9.0% above the national average of 82%. This rates the BYD Seal as "Excellent" for MOT reliability.
Is the BYD Seal reliable?
Based on DVSA MOT data, the BYD Seal has a excellent reliability record with a 91.0% pass rate. It has a dangerous defect rate of 0.70% and a retest rate of 6.5%.
How much does it cost to fix common BYD Seal MOT failures?
Typical repair costs for BYD Seal MOT failures range from £30–£200 for lamps, reflectors and electrical equipment issues to £120–£450 for suspension problems. Prices are estimates based on typical UK independent garage rates.
What mileage should a BYD Seal have?
Based on MOT test data, the average BYD Seal covers approximately N/A by 3 years, N/A by 5 years, and N/A by 10 years. Significantly higher or lower mileage may warrant closer inspection.
Should I buy a used BYD Seal?
The BYD Seal is generally a solid choice based on MOT data. Check the full MOT history of any specific vehicle before purchasing, paying particular attention to lamps, reflectors and electrical equipment issues and mileage consistency.
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