AutoRankBETA

BYD SEAL U BOOST DM-I PHEV AUTO - Model Report

Reliability, mileage, fuel mix, safety, and defect profile from AutoRank.

Reporting Period: Last 5 years Report Date: Generated today Filters: All years, fuels and engines autorank.co.uk/models/byd/seal-u-boost-dm-i-phev-auto

Time Period & Model

Time period snapshot: Last 5 years

Manufacturer: BYD

Model: Seal U Boost Dm-I Phev Auto

Model reliability rank

MOT-based rank from 456 selected-period tests.

View More models

Overall MOT pass rate

85.3%

Share of this model's 456 selected-period MOT tests that pass.

View manufacturers

Efficiency, emissions & tax

Average MPG

424.1 mpg

CO2 emission

18 g/km

Euro emissions

Euro 6

Tax cost

£200/yr

Vehicle list price over £40,000?NoYes

Average vehicle miles

42,542

Lower average mileage in the analysed fleet.

Life expectancy miles

Not enough data

Not enough older-vehicle data for an expectancy estimate.

Average vehicle age

0.1

Shorter age profile in the current analysed pool.

Vehicles represented

15,016

138 valid MOT, 14,878 under 3 years.

Tests analysed

456

456 MOT tests in the selected period.

Rarity ranking

Based on Make & Model

Scarce

15,016On the road

Insight summary

BYD Seal U Boost Dm-I Phev Auto is a scarce model in this snapshot, with 15,016 represented vehicles and 0.04% of the active UK pool tracked by AutoRank. For the last 5 years, it has a pass rate of 85.3% from 456 MOT tests, with a reliability score of 50. The current pool shows an average of 42,542 miles and an average age of 0.1 years. Hybrid electric leads the fuel split, and the most frequent defect themes are tyre condition, suspension joints and parking brake. The practical read is that the BYD Seal U Boost Dm-I Phev Auto looks like a solid used-car baseline rather than a rare find, with age, mileage and common wear items doing most of the explaining.

Fuel type breakdown (by model)

Fuel	Vehicles
HYBRID ELECTRIC (CLEAN)	15,016

Euro NCAP Safety

NCAP rating

5 / 5

Adult

90%

Children

86%

Pedestrian

83%

Safety systems

77%

Top 25 most common defects (by model)

Defect	Count
Nearside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))	5
Offside Front Anti-roll bar ball joint dust cover severely deteriorated (5.3.4 (b) (i))	4
Parking brake efficiency below requirements (1.4.2 (a) (i))	3
Windscreen washer provides insufficient washer liquid (3.5 (a))	3
Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))	2
Front Brake pad(s) less than 1.5 mm thick (1.1.13 (a) (ii))	2
Front Registration plate does not conform to the specified requirements (0.1 (d))	2
Front Windscreen washer provides insufficient washer liquid (3.5 (a))	2
Front Windscreen wiper blade defective slightly smearing (3.4 (b) (i))	2
Nearside Front Coil spring fractured or broken (5.3.1 (b) (i))	2
Nearside Front Front fog lamp lens defective which has no effect on emitted light (4.5.1 (b) (i))	2
Nearside Front Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))	2
Nearside Rear Outer Brake pad(s) less than 1.5 mm thick (1.1.13 (a) (ii))	2
Nearside Rear Service brake excessively binding (1.2.1 (f))	2
Nearside Rear Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (5.2.3 (d) (i))	2
Nearside Rear Tyre has ply or cords exposed (5.2.3 (d) (ii))	2
Nearside Side repeater lens defective which has no effect on emitted light cracked lens (4.4.1 (b) (i))	2
Nearside Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))	2
Offside Front Coil spring fractured or broken (5.3.1 (b) (i))	2
Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))	2
Offside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))	2
Offside Headlamp not working on dipped beam (4.1.1 (a) (ii))	2
Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c))	2
Rear Brake pad(s) less than 1.5 mm thick (1.1.13 (a) (ii))	2
Rear Registration plate does not conform to the specified requirements (0.1 (d))	2

All 25 defects ranked by recorded countShowing 57 defects across this top 25 set

Nearside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))

Offside Front Anti-roll bar ball joint dust cover severely deteriorated (5.3.4 (b) (i))

Parking brake efficiency below requirements (1.4.2 (a) (i))

Windscreen washer provides insufficient washer liquid (3.5 (a))

Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))

Front Brake pad(s) less than 1.5 mm thick (1.1.13 (a) (ii))

Front Registration plate does not conform to the specified requirements (0.1 (d))

Front Windscreen washer provides insufficient washer liquid (3.5 (a))

Front Windscreen wiper blade defective slightly smearing (3.4 (b) (i))

Nearside Front Coil spring fractured or broken (5.3.1 (b) (i))

Nearside Front Front fog lamp lens defective which has no effect on emitted light (4.5.1 (b) (i))

Nearside Front Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))

Nearside Rear Outer Brake pad(s) less than 1.5 mm thick (1.1.13 (a) (ii))

Nearside Rear Service brake excessively binding (1.2.1 (f))

Nearside Rear Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (5.2.3 (d) (i))

Nearside Rear Tyre has ply or cords exposed (5.2.3 (d) (ii))

Nearside Side repeater lens defective which has no effect on emitted light cracked lens (4.4.1 (b) (i))

Nearside Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))

Offside Front Coil spring fractured or broken (5.3.1 (b) (i))

Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))

Offside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))

Offside Headlamp not working on dipped beam (4.1.1 (a) (ii))

Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c))

Rear Brake pad(s) less than 1.5 mm thick (1.1.13 (a) (ii))

Rear Registration plate does not conform to the specified requirements (0.1 (d))

BYD Seal U Boost Dm-I Phev Auto reliability and MOT data