What goes wrong, what it costs, and what to check before you buy a used Renault LL29 DCI 100.
The Renault LL29 DCI 100 occupies a niche position on the UK market.
We track 5 known issues across the Renault LL29 DCI 100 range, including 1 rated as safety-critical. Knowing which variants and configurations to approach with caution can save you from expensive surprises after purchase.
Found a Renault LL29 DCI 100? Enter the reg to see which of our 5 known issues apply to that exact car, plus full MOT history and mileage checks.
LL29 (2002–2012) — Engine options included the 1.9 dCi 100. Our database flags 5 known issues on this generation, 1 of which are rated as safety-critical. The most significant concern is Subframe corrosion at mounting points (£800–£1,500 to address).
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.
Subframe 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.
Inspect the wheel arches, sills, jacking points and door bottoms carefully. Press gently on sills to check for soft spots. Look underneath for corrosion on structural components. Check the MOT history for corrosion-related advisories or failures.
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.
Worn 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.
Listen for knocking, clunking or rattling over bumps during the test drive. Inspect the underside for corroded or cracked suspension components. Check the MOT history for suspension-related advisories, which often predict future failures.
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.
Worn 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.
During the test drive, check the steering for excessive play, vibration or pulling to one side. Listen for groaning or whining when turning the wheel at low speed. Power steering fluid level and condition should be checked on hydraulic systems.
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.
Failed 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.
Listen for knocking, clunking or rattling over bumps during the test drive. Inspect the underside for corroded or cracked suspension components. Check the MOT history for suspension-related advisories, which often predict future failures.
The rear drum handbrake system shows multiple failure modes at high mileage. MOT data indicates failures at up to The handbrake typically becomes inoperative on one side first, then progresses to complete system failure.
An ineffective handbrake represents a serious safety hazard for hill starts and parking security. The vehicle will fail its MOT test and may roll when parked on gradients. Complete system renovation typically requires new cables, brake shoe adjustment, and drum refurbishment or replacement.
Check brake disc condition for lipping or scoring. Test braking at moderate speed for pulling to one side or vibration through the steering wheel. Review MOT advisories for brake-related items.
For the full breakdown of all 5 tracked issues with repair costs, see the Renault LL29 DCI 100 common problems page.
Based on 2k real DVSA MOT tests, the Renault LL29 DCI 100 fails more often than average on several items. The biggest outlier is indicator or hazard warning switch inoperative at 22x the fleet average, followed by light unit fault (21x).
When viewing a specific car, check its MOT history for recurring advisories in these categories. See the full Renault LL29 DCI 100 MOT failure breakdown for data at every mileage point.
Routine servicing (oil and filter change every 13k miles) typically costs £80–£120 at an independent garage.
The bigger-ticket items to budget for include timing belt and tensioner (£350–£500).
See the full Renault LL29 DCI 100 service schedule for every interval and cost breakdown.
The Renault LL29 DCI 100 has some well-documented weak points, including 1 safety-critical issue that demand careful checking. The right example, properly maintained, can still be a sound purchase — but cutting corners on the pre-purchase inspection is not advisable.
Before committing, check the car's full MOT history, verify the service record is complete, and if possible arrange a specialist inspection. Enter any registration into our free report to see the complete picture.
Get Car Wise maintains a database of known mechanical issues for every popular car on UK roads, tracking the faults that owners, specialists and DVSA data reveal.
When you run a report on a specific Renault LL29 DCI 100, we cross-reference the exact variant, engine and age against our database of 5 known issues. Combined with full MOT history analysis, mileage verification and DVLA data, you get a complete picture before viewing.
Enter the registration for MOT history, mileage verification, known faults for that exact variant, and a Get Car Wise Score.
This guide was compiled from independent expert reviews, DVSA MOT data, specialist workshops and our own database of 5 known Renault LL29 DCI 100 issues. We are not affiliated with any source listed.