Renault 2.0 16v gasolina (F4R atmosférico and F4RT turbo)Ignition coils and spark plugs
F4RT ignition coil failure on the 2.0 16v F4R and F4RT
Why this rating?
Medium severity: It can leave you stranded or get worse if ignored, without destroying the engine.
Frequency occasional: Octane cites it as a common fault on the Mégane 225; on fiches-auto it appears in 2 of the 16 owner reports for the 165 hp 2.0 T Mégane II, and on the 225 hp version one user replaced all four. This is qualitative information with no solid proportions, so it is rated occasional.[1][2]
Symptoms
- Hesitation and rough running due to misfires.[1]Jerking: other faults that cause it · Garage soon
- Possible engine warning light due to a misfire.[1]Engine warning light: other faults that cause it · Garage soon
Why it happens
Affected cars and years
Mégane II RS (225 hp) and 165 hp 2.0 T according to the sources; Octane refers generally to the 2004-2009 Mégane 225.[1][2]
| Version | Years | Codes |
|---|---|---|
| 2.0 turbo 165-250 hp (F4RT) | since 2004 | F4RT |
Models fitted with the affected versions
Renault
- Renault Mégane II2002–2009
- Renault Laguna II2001–2007
- Renault Mégane III2009–2016
How much it costs to repair
Includes: Diagnosis and replacement of the coils.[1]
We have not found a published quote in Spain.
Prices in Spain, including VAT. A workshop hour costs on average €38–66 at independent garages and €77–134 at dealerships in Spain, depending on the region and the brand. How we calculate costs
How to check for it before buying a used car
- Check that the engine idles smoothly from cold, with no judder.[1]
Parts needed
The part or kit that fixes this fault, according to the sources.
Ignition coils
Generate the spark in each cylinder.
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Recalls, campaigns and claims
As of 5 October 2026, we have no record of recalls, campaigns or extended manufacturer warranties for this fault. Check with an official dealer using the chassis (VIN) number: they will tell you whether the car has any outstanding campaign.
What owners say
Frequently asked questions
Is it serious if the Mégane RS coils fail?
The sources describe it as an electrical part fault with misfires and hesitation. It should be repaired soon, because driving with misfires is not advisable.[1]
What can you do now?
We will put you in touch with a partner only if you authorise it in the form.
Other 2.0 16v F4R and F4RT faults
- Critical severityFrequency: RareTimingTiming belt failure due to overdue maintenanceIf it is not changed on time, the timing belt on the F4R/F4RT can snap and wreck the engine. Evo and Octane recommend checking the documented belt change before buying a Mégane RS.
- Medium severityFrequency: OccasionalTimingFaulty camshaft variable valve timing pulleyOn the F4R 2.0 16v the variable valve timing pulley can degrade and cause a metallic, diesel-like rattle at idle or when warm. The sources put it at around 120,000 km on the Mégane II; replacement is expensive if done together with the timing belt kit.
More faults with the ignition coils on other engines and cars
- Medium severityFrequency: Very frequent1.4 and 1.6 16vIgnition coil failureThe individual ignition coils are the most-cited fault of the K4J/K4M in the European Renault versions: they fail frequently and cause jerking, loss of power and the engine warning light coming on. It is a cheap electrical part to replace, not internal engine damage.Appears at around 30,000 km
- High severityFrequency: Occasional1.2 PureTechSpark plug breakage on the 130 hp 1.2 PureTech turboOn the 130 hp 1.2 PureTech/e-THP turbo the original spark plugs can break; if a fragment falls into the cylinder it can damage the engine. Autojournal cites a 2015 recall to replace them on the 308 II.
- Medium severityFrequency: CommonBMW N43/N46Injector, ignition coil and NOx sensor failures (N43)On the direct-injection BMW N43, failures of the injectors, ignition coils (mainly in 2007-2008 units, now rare after a BMW service action) and the NOx sensor of its lean-burn combustion have been documented. The indirect-injection N46 does not have that sensor and does not suffer these failures.
- Medium severityFrequency: CommonBMW N54/N55Oil in the spark plug wells from the rocker cover gasketOn the N54 and N55 the rocker cover gasket hardens with age and lets oil seep into the spark plug wells. Guides treat it as a known fault: it smells of burnt oil and can damage spark plugs and coils.
- Medium severityFrequency: Common1.0/1.2/1.4 EcotecIgnition coil failureThe ignition coils on this engine fail fairly often in the Corsa, Astra, Meriva and Adam, causing jerking, the engine warning light and, in the clearest cases, the engine running on one cylinder fewer; the garage fixes it by replacing the affected coil.Repair (garage): €150–€480Appears at around 15,000 km
- Medium severityFrequency: Common1.4 TurboIgnition coil failureThe ignition coils of the 1.4 Turbo fail fairly often on the Mokka and Meriva B, with jerking, occasional loss of power and the engine warning light on; the garage fixes it by replacing the affected coil or coils.Repair (garage): €400–€600Appears at around 47,000 km
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Sources
Every fact on this page links to its source. If you find an error, let us know.
- RenaultSport Megane 225 buying guide, history and reviewOctane · Motoring press · published 7 February 2025 · consulted 5 October 2026
- Pannes Renault Mégane 2 (testimonios por motorización)fiches-auto.fr · Other source · consulted 5 October 2026 · in French