Generations
LL29 — LL29
2002–2012
1.9 dCi 100
Top issues to watch for
The most serious Renault Ll29 Dci 100 problems ranked by severity. We track 5 known issues — here are the ones you need to know about first.
Dangerous
Subframe corrosion at mounting points (LL29)
The rear subframe mounting points on the LL29 suffer from corrosion that weakens the structural connection between the subframe and body shell. This appears at exceptionally high mileage and affects the fundamental structural integrity of the vehicle. MOT data shows this model fails for subframe corrosion at 3.1 times the fleet average at high mileage, with a worsening trend over recent years.
What happens if ignoredSubframe separation represents a catastrophic structural failure that makes the vehicle immediately dangerous to drive. The rear suspension geometry becomes unpredictable and the vehicle may lose directional stability without warning. Professional structural welding repair costs typically exceed the vehicle's value at this age and mileage.
Independent garage
£800–£1,500
Specialist
£1,200–£2,000
Parts only
£200–£500
Major
Suspension bush and joint wear (LL29)
The front and rear suspension bushes and ball joints on the LL29 show accelerated wear compared to similar vehicles. MOT data indicates failures at 7.0 times the fleet average, particularly affecting the front lower wishbone bushes and rear beam mounting bushes. The rubber compounds appear to deteriorate faster than expected for this vehicle class.
What happens if ignoredWorn suspension bushes compromise handling precision and can lead to premature tyre wear with uneven wear patterns. Completely failed bushes allow excessive suspension movement that affects braking stability and cornering safety. Replacement requires press equipment and typically involves multiple components simultaneously.
Independent garage
£250–£450
Specialist
£300–£550
Main dealer
£450–£750
Parts only
£80–£200
Major
Steering ball joint wear (LL29)
The steering ball joints, particularly the track rod ends, develop excessive wear and free play at high mileage. MOT data shows failures at 6.0 times the fleet average with a worsening trend, suggesting the problem is becoming more prevalent as the remaining fleet ages. This affects steering precision and can lead to MOT failure for excessive play.
What happens if ignoredWorn ball joints create dangerous steering unpredictability, particularly during emergency manoeuvres or hard braking. Complete failure can result in loss of steering control. The vehicle will fail its MOT test and should not be driven until repaired. Track rod end replacement typically requires wheel alignment afterwards.
Independent garage
£120–£250
Specialist
£150–£300
Main dealer
£250–£400
Parts only
£40–£100
Major
Shock absorber failure (LL29)
The shock absorbers on the LL29 fail at 3.0 times the fleet average rate, typically through internal seal failure causing oil leakage. MOT data shows a worsening trend, with most failures occurring between 120,000-150,000 miles. The front struts are particularly prone to leakage from the main seal around the piston rod.
What happens if ignoredFailed shock absorbers significantly compromise vehicle stability, braking performance, and cornering safety. The vehicle will fail its MOT test and handling becomes unpredictable in emergency situations. Oil leakage can contaminate brake components if severe. Replacement typically requires both sides simultaneously to maintain balance.
Independent garage
£200–£350
Specialist
£250–£450
Main dealer
£400–£650
Parts only
£80–£180
1 more known issues tracked
Including wear items, electrical niggles, and generation-specific problems.
MOT failure hotspots
Based on DVSA MOT test data. These are the items where the Renault Ll29 Dci 100 fails at a significantly higher rate than the average car.
Indicator or hazard warning switch inoperative
Lights & Electrics · 150k+ miles
MOT failure rate: 22x the fleet average
Sample: 593 tests
Light unit fault
Lights & Electrics · 120-150k miles
MOT failure rate: 21x the fleet average
Sample: 239 tests
Stop lamp missing, inoperative or in the case o...
Lights & Electrics · 120-150k miles
MOT failure rate: 9.2x the fleet average
Sample: 211 tests
Suspension pin, bush or joint worn
Suspension · 150k+ miles
MOT failure rate: 7.0x the fleet average
Sample: 871 tests
Track rod ends worn
Steering · 150k+ miles
MOT failure rate: 6.0x the fleet average
Sample: 1,051 tests
Seat mounting fault
Seatbelts & Airbags · 120-150k miles
MOT failure rate: 5.9x the fleet average
Sample: 357 tests
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Related
- Renault Ll29 Dci 100 buyer's guide
- Renault Ll29 Dci 100 service history check
- Renault Ll29 Dci 100 service schedule & costs
- Renault Ll29 Dci 100 MOT failure rates
- How to check Renault service history
- Buying a car without service history
- Renault Ll29 Dci 100 car check £7.49
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Renault Ll29 Dci 100 reliability FAQs
What are the most common problems with the Renault Ll29 Dci 100?
The Renault Ll29 Dci 100 has 5 known issues across 2 severity levels. The most serious are: Subframe corrosion at mounting points (LL29).
Is the Renault Ll29 Dci 100 reliable?
The Renault Ll29 Dci 100 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 Renault Ll29 Dci 100 problems?
Repair costs range widely. The most significant issue (Subframe corrosion at mounting points (LL29)) costs £800–£1,500 at an independent garage. Minor issues can be under £200. Always get a full inspection before buying.