Vehicle summary
ULEZ status is estimated based on fuel type and registration year. It may not reflect the actual emission standard of this vehicle. Check with TfL for a definitive answer.
At a glance
This 2017 Ford Focus Petrol 999cc has had 9 MOT tests on record, passing 7 and failing 2 (78% pass rate). It has 66,190 miles on the clock, averaging 7,830 miles per year, around the UK average of 7,400. The 1.0 EcoBoost engine is known for wet timing belt and coolant leaks from cylinder head, seals, or header tank cap. Common Ford Focus issues include door latch failure and squeaky door seals / a-pillar noise.
MOT & Mileage History for BY03 SON
Data from DVSA. Last updated August 2026. Check gov.uk for the latest.
MOT failures recorded
Average miles/year
Gaps in MOT history
Mileage Analysis
About average| Latest reading | 66,190 miles |
| Reading date | |
| Miles last year | 1 |
| Average per year | 7,830 |
| Mileage consistency | Variable |
Check BY03 SON
- Write-off & insurance claims Experian
- Outstanding finance check Experian
- Stolen vehicle check Experian
- Ownership changes Experian
- Mileage discrepancy alerts
- Plate & colour change history
- Franchised dealer records
- Independent garage visits
- Service interval analysis
- Warranty work logged
Full MOT Test History 9 tests on record
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Reported issues for this Ford Focus
These are the most commonly reported problems on Ford Focus models (2011–2018), based on owner reports and workshop data across the UK.
Door Latch Failure
Pawl spring tab fractures, causing doors to unlatch unexpectedly while driving. · Typical repair: Free if under DVSA recall R/2015/173 (or Ford 15S26); otherwise £200-£400 per door at indie garage.
Squeaky Door Seals / A-Pillar Noise
Seals loosen or degrade, allowing wind noise and vibration. · Typical repair: £50-£150 (new seals + labour).
Excessive Battery Discharge / BCM Water Ingress
Washer fluid leaks down wires into BCM, causing drain and fault codes. · Typical repair: £100-£250 (clean BCM + new pump if needed).
Powershift Gearbox Jerking/Shuddering (Auto Variants Only)
Clutch wear or sensor failure causes harsh shifts. · Typical repair: £400-£1,500 (sensor/clutch pack).
Wet timing belt (oil-immersed, part typically CM5G-6M256-A or similar Ford OEM)
Coolant leaks from cylinder head, seals, or header tank cap
Common faults, what to check, and what to pay
Explore more about the Ford Focus
Thinking about buying this car? These resources will help you make an informed decision.
Vehicle Details
| Registration | BY03 SON |
| Make | Ford |
| Model | Focus |
| Colour | Blue |
| Fuel type | Petrol |
| Engine | 999cc |
| Year | 2017 |
| First registered | |
| Area code | BY — Birmingham, Birmingham |
| Age identifier | 03 — March 2003 to August 2003 |
More BY03 S plates
Browse all BY03 S registrations from Birmingham.
About BY03 SON
What car is BY03 SON?
BY03 SON is a blue Ford Focus, petrol (999cc). First registered in Birmingham in 2017.
What is the mileage of BY03 SON?
The last recorded mileage for BY03 SON was 66,190 miles, recorded on 9 Apr 2026 during its most recent MOT test.
Has BY03 SON passed its MOT?
BY03 SON has had 9 MOT tests with a 78% pass rate (7 passes, 2 failures). It last passed on 9 Apr 2026.
Is BY03 SON ULEZ compliant?
Based on its fuel type and registration year, BY03 SON is likely ULEZ compliant. Petrol post-2005 (Euro 4). This is an estimate based on typical emission standards — confirm with TfL's ULEZ checker for a definitive answer.
How old is BY03 SON?
BY03 SON is approximately 9 years old. Age identifier 03 means registered between 1 March 2003 and 31 August 2003.