Renault Koleos: 2.0 dCi DPF blockage and EGR clogging
2.0 dCi DPF blockage and EGR clogging is a common engine fault on the Renault Koleos on the 2008–2016 cars, and we rate it major. Putting it right costs $700 to $2,500 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 17 documented faults on the Renault Koleos.
- Vehicle
- Renault Koleos
- Engine
- 2.0L
- Years
- 2008–2016
- Fuel
- diesel
- System
- Engine
What you are looking at
No photograph available
What goes wrong
The first-generation Koleos 2.0 dCi (M9R, shared with the Nissan X-Trail T31) is prone to diesel-particulate-filter blockage and EGR clogging, especially on cars used mainly for short suburban trips that never get the exhaust hot enough to burn off soot. Symptoms are reduced power, a DPF/engine warning light and limp mode. A long highway run can regenerate a partly blocked filter, but a fully blocked DPF or a stuck EGR is a bigger bill.
What you would notice
- Reduced power / limp mode
- DPF or engine warning light
- Black smoke or heavy diesel smell
- Poor economy on short trips
How to check it
Where to look. Exhaust line (DPF); intake/exhaust side (EGR valve)
Ask how the car has been used – a short-trip town car is higher risk.
On the drive make sure it pulls strongly without limp mode and check the dash for a DPF or glow-plug light.
Ask for any DPF/EGR service history.
What it costs to put right
$700 to $2,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.
Ask the seller
- “Has this car mostly done short town trips or longer highway runs?”
- “Has the DPF or EGR valve ever been cleaned or replaced?”
Now check the Renault Koleos you are actually looking at
Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.
Where this comes from
- AUTODOC – 'Renault Koleos: common problems and faults'
- Renault Forums (renaultforums.co.uk) 'Koleos 2.0dci 175 problems' thread
Renault Koleos buyer questions
Is 2.0 dci dpf blockage and egr clogging serious on a Renault Koleos?
We rate it major and common on the Renault Koleos. The first-generation Koleos 2.0 dCi (M9R, shared with the Nissan X-Trail T31) is prone to diesel-particulate-filter blockage and EGR clogging, especially on cars used mainly for short suburban trips that never get the exhaust hot enough to burn off soot. Symptoms are reduced power, a DPF/engine warning light and limp mode. A long highway run can regenerate a partly blocked filter, but a fully blocked DPF or a stuck EGR is a bigger bill.
How much does it cost to fix on a Renault Koleos?
$700 to $2,500 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.
Which Renault Koleos years are affected?
Our research records this fault on the 2008–2016 Renault Koleos. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.
How do I check for it before I buy?
Ask how the car has been used – a short-trip town car is higher risk. On the drive make sure it pulls strongly without limp mode and check the dash for a DPF or glow-plug light. Ask for any DPF/EGR service history. Look here: Exhaust line (DPF); intake/exhaust side (EGR valve)