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Ford Ka Problems & Known Issues

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

Generations

RB — First Generation
1996–2008
1.3 Duratec, 1.6 Duratec
RU8 — Second Generation
2008–2016
1.2 Duratec, 1.3 TDCi
Ka+ — Third Generation (Ka+)
2014–2019
1.2 Ti-VCT, 1.2 Ti-VCT

Top issues to watch for

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

Dangerous
Subframe and suspension mounting corrosion (RB/RU8)
RB, RU81996–201640k–150k miles
The Ka suffers from severe corrosion around subframe mounting points and suspension attachment areas. MOT data shows this model fails at up to 266 times the national average for suspension component corrosion and structural weakening in prescribed areas. The thin steel construction and inadequate factory rust protection cause mounting points to deteriorate rapidly, particularly on the rear beam axle mounting area and front subframe attachment points. This is a safety-critical structural failure that can affect vehicle control.
What happens if ignoredSubframe or suspension mounting failure can cause complete loss of vehicle control, particularly dangerous during braking or cornering. Repair typically requires professional welding of new metal sections, often costing more than the car's value. The vehicle is unsafe to drive if structural integrity is compromised.
Independent garage
£500–£1,500
Specialist
£600–£1,800
Main dealer
£1,000–£2,500
Parts only
£100–£400
Major
Body structural corrosion at mounting points (RB/RU8)
RB, RU81996–201650k–150k miles
The Ka body structure suffers from widespread corrosion at critical mounting points, with MOT data showing failure rates up to 172 times the national average. The problem affects door hinges, seat belt mounting points, and other structural attachment areas. This is distinct from subframe issues but equally serious for vehicle integrity. The lightweight construction and poor corrosion resistance of the base metal make this a progressive issue that worsens rapidly once started.
What happens if ignoredStructural corrosion at mounting points can compromise crash protection and cause doors or other components to fail unexpectedly. Welded repairs are often required but may not be economical given the car's value. Extensive corrosion can make the vehicle unsafe and unroadworthy.
Independent garage
£300–£1,000
Specialist
£400–£1,200
Main dealer
£800–£2,000
Parts only
£50–£300
Major
Power steering pipe corrosion (RB)
RB1996–200860k–150k miles
First-generation Ka models suffer from power steering pipe corrosion at rates 150 times higher than the national fleet average. The steel high-pressure lines are inadequately protected against corrosion and develop pinhole leaks or complete failure. This primarily affects the feed line from the power steering pump to the rack. Loss of power steering fluid leads to heavy steering effort and potential pump damage if driven with low fluid levels.
What happens if ignoredComplete power steering failure makes the car difficult and dangerous to control, particularly at low speeds during parking. Continued driving with low fluid will damage the power steering pump, requiring additional expensive repairs. A high-pressure line failure can cause sudden loss of assistance.
Independent garage
£200–£400
Specialist
£250–£450
Main dealer
£400–£700
Parts only
£80–£200
Major
Brake hose deterioration (RB)
RB1996–200880k–150k miles
First-generation Ka models show brake hose failures at 81 times the national fleet average. The rubber brake hoses deteriorate internally and externally, causing swelling, cracking, or complete failure. This is a safety-critical issue as brake hose failure can lead to complete loss of braking on the affected circuit. The front brake hoses are particularly vulnerable due to their exposure to heat from the brake discs and road contaminants.
What happens if ignoredBrake hose failure can cause partial or complete brake system failure, creating a serious accident risk. A failed hose typically affects one front brake and the opposite rear brake due to the diagonal brake circuit design. Immediate professional attention is required if brake hose problems are suspected.
Independent garage
£80–£150
Specialist
£100–£180
Main dealer
£150–£250
Parts only
£30–£80

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 Ford Ka fails at a significantly higher rate than the average car.

ABS fault
Brakes · 20-40k miles
MOT failure rate: 517x the fleet average
Sample: 45,075 tests
Body, cab or chassis corroded at mounting point...
Bodywork · 20-40k miles
MOT failure rate: 213x the fleet average
Sample: 11,563 tests
Subframe bushes or mounts worn
Suspension · 20-40k miles
MOT failure rate: 149x the fleet average
Sample: 40,092 tests
Structural corrosion
Bodywork · 20-40k miles
MOT failure rate: 148x the fleet average
Sample: 45,075 tests
Seat mounting fault
Seatbelts & Airbags · 20-40k miles
MOT failure rate: 128x the fleet average
Sample: 54,798 tests
Power steering fault
Steering · 0-20k miles
MOT failure rate: 114x the fleet average
Sample: 14,782 tests

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Related

Ford Ka reliability FAQs

What are the most common problems with the Ford Ka?

The Ford Ka has 5 known issues across 2 severity levels. The most serious are: Subframe and suspension mounting corrosion (RB/RU8).

Is the Ford Ka reliable?

The Ford Ka has 1 dangerous and 4 major known issues. Most can be avoided with a thorough pre-purchase check and full service history.

How much does it cost to fix Ford Ka problems?

Repair costs range widely. The most significant issue (Subframe and suspension mounting corrosion (RB/RU8)) costs £500–£1,500 at an independent garage. Minor issues can be under £200. Always get a full inspection before buying.

Which Ford Ka generation is most reliable?

The Ka+ (2014–2019) 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.