What are the most common Renault Megane problems?

According to Au7o's analysis of 200+ owner reports, the 2021-2021 Renault Megane has 2 documented issues. The most frequently reported are: Injection System Fault Warning, Timing Belt Premature Failure. None are rated critical, but regular maintenance is recommended.

Is the Renault Megane reliable?

The 2021-2021 Renault Megane has 2 known issues documented across 200+ owner reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Renault Megane problems?

Repair costs for known Renault Megane issues range from $100 to $700, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2003-2023 Renault Megane Timing Belt Premature Failure?

The Megane timing belt can fail before the manufacturer-recommended interval, particularly on the 1.5 dCi diesel. Oil contamination from the front crankshaft seal accelerates belt degradation. Repairs typically run $350-$700. Severity: critical.

2021 Renault Megane Problems: 2 Issues Every Owner Should Know

2021 model year · 200+ owner reports · Updated April 2026

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According to Au7o's analysis of 200+ owner reports, the 2021 Renault Megane has 2 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is Injection System Fault Warning with 110 owner reports. Across all issues, repair costs range from $100 to $700. DIY maintenance guides at au7o.io.

All 2 Known Issues

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Community Reported

110 owners

On the 2003-2023 Renault Megane, the Megane displays an "Injection Fault" warning on the dashboard, which can be triggered by numerous sensors and components. Common causes include the crankshaft position sensor, throttle body, and fuel pressure regulator.

This issue also affects: Renault Clio, Audi TT, BMW 1 Series

Common Symptoms

Injection fault warning
Engine stalling
Difficult starting
Loss of power

How to Fix

Diagnose with Renault CLIP or compatible diagnostic tool to identify the specific fault code. Common fixes include crankshaft sensor replacement, throttle body cleaning, and fuel pressure regulator replacement.

Typical repair cost:$100 - $500

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110+ owners have reported this issue

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Community Reported

Medium Confidence110 reportsLast reported by owners Invalid DateReviewed Invalid Date

2021 Renault Megane Problems: 2 Issues Every Owner Should Know

All 2 Known Issues

2003-2023 Renault Megane: Injection System Fault Warning#