CriticalCommonCooling

Audi Q5: EA888 Plastic Impeller Water Pump Failure

EA888 Plastic Impeller Water Pump Failure is a common cooling fault on the Audi Q5 on the 2008–2016 cars, and we rate it critical. Putting it right costs $700 to $1,800 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 20 documented faults on the Audi Q5.

Vehicle: Audi Q5
Engine: 1.8L / 2.0L
Years: 2008–2016
Fuel: petrol
System: Cooling

This page covers the Audi Q5 as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Audi Q5 faults20 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Water pump yet. We would rather show none than show a picture of a different part.

What goes wrong

CAEB and CDNB EA888 engines in the Q5 8R use the same plastic-impeller water pump as the A4 B8 platform. The plastic impeller spins independently of its metal hub after thermal fatigue breaks the interference fit, causing immediate total loss of coolant circulation with no external leak. The Q5's heavier mass and engine compartment airflow characteristics can cause temperature to rise more rapidly than in the A4 once circulation fails. Without prompt shut-down, cylinder head gasket failure or head warping results. Updated metal-impeller pumps have been available as service replacements since approximately 2012.

What you would notice

Rapid and unexpected coolant temperature spike to red zone
Heater suddenly blows cold despite engine at normal temperature
No external coolant leak despite overheating episode
Normal coolant level with no explanation for overheating

How to check it

Where to look. Right side of engine block, belt-driven accessory pump

Confirm whether the water pump has been replaced and whether the replacement was a metal-impeller unit. During a test drive, monitor coolant temperature throughout — it should sit consistently at the midpoint. If the vehicle still has its original pump with over 80,000 km, treat replacement as an immediate requirement. Ask if the engine has ever overheated or shown a high-temperature warning.

Parts involved: Water pump.

What it costs to put right

$700 to $1,800 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Has the water pump been replaced, and was it upgraded to a metal impeller unit?”
“Has the engine ever overheated or shown a high-temperature warning?”
“When was the coolant last changed and pump inspected?”

Now check the Audi Q5 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.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Audi Q5 buyer questions

Is ea888 plastic impeller water pump failure serious on a Audi Q5?

We rate it critical and common on the Audi Q5. CAEB and CDNB EA888 engines in the Q5 8R use the same plastic-impeller water pump as the A4 B8 platform. The plastic impeller spins independently of its metal hub after thermal fatigue breaks the interference fit, causing immediate total loss of coolant circulation with no external leak. The Q5's heavier mass and engine compartment airflow characteristics can cause temperature to rise more rapidly than in the A4 once circulation fails. Without prompt shut-down, cylinder head gasket failure or head warping results. Updated metal-impeller pumps have been available as service replacements since approximately 2012.

How much does it cost to fix on a Audi Q5?

$700 to $1,800 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 Audi Q5 years are affected?

Our research records this fault on the 2008–2016 Audi Q5. 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.