"Is the Laguna 2.0 d reliable, and what should you check?"
When buying a used 2014 Renault Laguna 2.0 d, the most frequently mentioned issue is cracks/leaks in intercooler pipes and air intake hose failures. DPF system and sensor/pipe problems are also commonly reported.
Engine: M9R
M9R · turbo petrol · 2.0 d · Used in this car from 2007-2015
Strengths
Low fuel consumption
High engine lifespan with proper maintenance
Watch-outs
Demanding fuel system with piezo injectors
Relatively modest timing chain lifespan
Oil separator not always effective
Known engine issues
Fuel systemBosch piezo injectors are demanding on diesel quality and have poor repairability, but the main issues are caused by unreliable fuel pressure regulators. Diagnosis of poor starting or floating idle should start with them.
Timing chainThis engine was developed jointly with Nissan engineers, so the timing drive is chain-based. Opinions on its lifespan vary greatly: some claim 400,000 km on the original chain, while others needed replacement at 150,000 km.
TurbochargerAll versions of these diesel engines are equipped with reliable Garrett turbochargers, but boost errors appear regularly. Usually the vacuum system, boost sensor, or sticking variable geometry mechanism is at fault.
Listed from most frequently reported, each with its source.
Cracks/leaks in intercooler pipes and air intake hose failures
Often reported
Owners report cracks or breaks in intercooler pipes and air intake hoses, leading to loss of turbo pressure and power drop, sometimes accompanied by warning lights or error messages.
Engine Bay
DPF system and sensor/pipe problems
Often reported
Difficulty with DPF regeneration and faults in the pressure pipes/sensors monitoring the DPF are frequently reported. Incomplete regenerations can increase soot buildup, which may trigger EGR clogging.
Exhaust Emissions
Clogged EGR valve and heat exchanger
Often reported
In the 2.0 dCi (M9R) engine, soot and carbon deposits often accumulate in the EGR valve and associated heat exchanger, causing power loss, idle fluctuation, warning light, and sometimes limp mode.
Exhaust Emissions
'Check injection' / faulty injectors reported
Often reported
Many users report a 'Check injection' warning, starting difficulty, or sudden stalling. Causes range from electronic control unit anomalies to fuel supply issues or worn/dirty injectors.
Fuel System
Renault Laguna 2.0 d technical specs
Renault Laguna 2.0 d (2014): boot 423 L; fuel use 6,5 l/100 km (urban 8,6 l/100 km · extra-urban 5,5 l/100 km); 0–100 in 8.5 s.
Boot capacity
423 L
Fuel consumption
6,5 l/100 km (urban 8,6 l/100 km · extra-urban 5,5 l/100 km)
What should I look for when buying a Renault Laguna 2.0 d?+
When buying a 2014 model 2.0 d, check service history, test drive, and engine/transmission warnings. Most commonly reported issues: cracks/leaks in intercooler pipes and air intake hose failures; DPF system and sensor/pipe problems; clogged EGR valve and heat exchanger.
What are the common problems of Renault Laguna 2.0 d?+
Most frequently reported issues: cracks/leaks in intercooler pipes and air intake hose failures; DPF system and sensor/pipe problems; clogged EGR valve and heat exchanger.
Is the Renault Laguna 2.0 d reliable?+
Rather than a simple yes or no, it's best to weigh the proven pros and cons together. This page lists 4 verified findings.
How does Carbeak collect data?+
The cards on this page are derived from the Difetti fault database; the source vehicle is matched to the target vehicle by brand, fuel type, engine, and generation. Topics with insufficient evidence are not shown.
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.
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