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Morgan Plus 4 Problems & Known Issues

The most common Morgan Plus 4 problems ranked by severity — what to watch for, what it costs to fix, and what happens if you ignore it.

Generations

CLASSIC — Classic Plus 4
1950–2009
2.0L Ford CVH/Zetec
MODERN — Modern Plus 4
2005–2020
2.0L Ford Duratec

Top issues to watch for

The most serious Morgan Plus 4 problems ranked by severity. We track 5 known issues — here are the ones you need to know about first.

Major
Excessive steering roughness
MODERN2005–20200k–40k miles
The steering system on Morgan Plus 4 models shows abnormally high rates of roughness in operation, appearing predominantly on lower-mileage examples. This affects steering feel and precision, making the car harder to control accurately. The issue appears linked to the exposed nature of Morgan's traditional chassis design allowing contamination of steering components, particularly the steering rack and column bearings.
What happens if ignoredRough steering reduces driving precision and can make the car difficult to control, particularly in emergency manoeuvres. Complete steering failure is unlikely but handling becomes progressively worse. Repair typically requires steering rack replacement or rebuild.
Independent garage
£400–£800
Specialist
£600–£1,200
Parts only
£200–£500
Major
Suspension bushes and joints premature wear
MODERN2005–20200k–40k miles
Morgan Plus 4 models show exceptionally high rates of suspension component wear, particularly bushes and joints, even at low mileages. The traditional chassis design with limited protection exposes suspension components to contamination and accelerated wear. This affects handling, tyre wear patterns, and MOT compliance.
What happens if ignoredWorn suspension components affect handling safety, cause accelerated tyre wear, and will result in MOT failure. Complete suspension collapse is unlikely but driving precision deteriorates significantly. Multiple components often need replacement simultaneously.
Independent garage
£300–£600
Specialist
£400–£800
Parts only
£150–£400
Major
Wheel bearing wear
MODERN2005–20200k–40k miles
Wheel bearings on Morgan Plus 4 models show excessive wear rates, particularly concerning given the low annual mileages typical of these sports cars. The exposed wheel assemblies and limited splash protection may contribute to contamination and accelerated bearing degradation. This is a worsening trend that affects safety.
What happens if ignoredWorn wheel bearings create safety risks including wheel detachment in extreme cases. More commonly, they cause noise, vibration, and poor handling. The bearing can seize suddenly, potentially causing loss of control. Replacement should be immediate once excessive play is detected.
Independent garage
£150–£300
Specialist
£200–£400
Parts only
£50–£150
Major
Brake binding and imbalance
MODERN2005–20200k–40k miles
Morgan Plus 4 brake systems show high rates of binding and imbalance across axles, often appearing on low-mileage cars that may have stood unused for extended periods. The exposed brake components are subject to corrosion, and infrequent use can cause caliper pistons to seize. This creates both safety and MOT compliance issues.
What happens if ignoredBinding brakes cause accelerated pad and disc wear, reduced braking efficiency, and can lead to brake fade or fire in extreme cases. Brake imbalance makes the car dangerous under heavy braking as it will pull violently to one side. Immediate attention is required for safety.
Independent garage
£200–£500
Specialist
£300–£600
Parts only
£100–£300

1 more known issues tracked

Including wear items, electrical niggles, and generation-specific problems. Check a specific car to see which issues apply to its age and mileage.

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MOT failure hotspots

Based on DVSA MOT test data. These are the items where the Morgan Plus 4 fails at a significantly higher rate than the average car.

Steering rack wear
Steering · 0-20k miles
MOT failure rate: 148x the fleet average
Sample: 2,900 tests
Suspension pin, bush or joint worn
Suspension · 20-40k miles
MOT failure rate: 56x the fleet average
Sample: 494 tests
Fluid leak
Exhaust & Emissions · 0-20k miles
MOT failure rate: 27x the fleet average
Sample: 276 tests
Stop lamps all missing or inoperative
Lights & Electrics · 0-20k miles
MOT failure rate: 19x the fleet average
Sample: 3,509 tests
Wheel bearings worn
Suspension · 20-40k miles
MOT failure rate: 16x the fleet average
Sample: 1,139 tests
Seat mounting fault
Seatbelts & Airbags · 0-20k miles
MOT failure rate: 8.6x the fleet average
Sample: 1,437 tests

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Related

Morgan Plus 4 reliability FAQs

What are the most common problems with the Morgan Plus 4?

The Morgan Plus 4 has 5 known issues across 2 severity levels. The most common problems relate to Excessive steering roughness and Suspension bushes and joints premature wear.

Is the Morgan Plus 4 reliable?

The Morgan Plus 4 has 0 dangerous and 4 major known issues. No dangerous issues are tracked, which is a positive sign.

How much does it cost to fix Morgan Plus 4 problems?

Repair costs range widely. The most significant issue (Excessive steering roughness) costs £400–£800 at an independent garage. Minor issues can be under £200. Always get a full inspection before buying.

Which Morgan Plus 4 generation is most reliable?

The CLASSIC (1950–2009) has the fewest dangerous issues (0). However, condition and service history matter more than generation — a well-maintained earlier car can be more reliable than a neglected newer one.