2013 BMW 3 Series (F30) · Known Issue
2013 BMW 3 Series Electric Water Pump Failure: What It Really Costs to Fix
Quick answer: 2013 BMW 3 Series electric water pump failure typically costs $800 to $1,400 at an independent shop, depending on which component failed.
Applies to: N20/N26 2.0L or N55 3.0L only. Other versions of the 2013 BMW 3 Series do not have this problem.
What the Issue Is
The N20/N26 four-cylinder and the N55 six in the F30 3 Series (the 320i and 328i through 2016, the 335i through 2015) use an electric water pump instead of a belt-driven one. The design has real benefits, precise cooling control and less parasitic drag, and one well-earned reputation: the pump is a wear item that can fail with little warning. The engine can go from normal to overheating in minutes, and these aluminum engines tolerate overheating poorly. The B46/B48 four-cylinder in the 2017 and later 330i and 330e went back to a mechanical, belt-driven main pump, and neither it nor the 340i's B58 is covered here.
Because the pump is electronic, failure modes vary: some pumps log fault codes and trigger a coolant-temperature warning first, others simply stop. Replacing the pump and thermostat together before failure costs far less than repairing an engine that has overheated, which is the case for doing it preventively on a high-mileage car with no record of a replacement.
On a used F30 with one of these engines, the question for a buyer is simple: has the pump ever been replaced? A high-mileage car on its original pump is carrying a bill that will come due, and your offer should reflect it.
Symptoms to Watch For
- 1.Coolant temperature warning or "Engine overheated" message in the cluster, sometimes with reduced power
- 2.Overheating at idle or in traffic while highway temps stay normal
- 3.Electric fan running loud and long after shutdown
- 4.Water pump fault codes on a scan
- 5.No cabin heat at idle in cold weather, an early low-flow tell
Real Repair Costs
Independent-shop pricing with an OEM pump, usually replaced together with the thermostat since they share labor. YourMechanic's average for the pump on a 328i Gran Turismo xDrive is about $1,000, and an OEM pump-and-thermostat kit costs about $585 to $650 in parts. A dealer charges more.
| Repair | Typical Cost (installed) |
|---|---|
| Electric water pump, installed | $700-$1,200 |
| Electric water pump + thermostat, installedthe standard preventive package | $800-$1,400 |
Moderate issue. Ranges are US independent-shop estimates with quality parts. Use them as negotiation grounding, not a quote.
Mechanic's Tip: Spot It Before You Buy
Ask one question first: "when was the water pump done?" On these cars it is a normal service item, and a seller with records will know. During the test drive, let the car idle for five minutes after a highway run and watch the temperature display; temperatures that creep up at idle while highway readings stay normal are the classic dying-pump pattern. A scan tool that reads BMW modules can also show water pump fault history, worth asking your inspection shop to check, since a failing pump can log faults before it quits outright.
The Bigger Ownership Picture
Beyond this specific issue, budget roughly $2,000-$3,000 per year for scheduled maintenance and repairs on a 2013 BMW 3 Series. That is a typical US range from Avturo's ownership-cost table, an estimate rather than a quote, and it excludes insurance, fuel, and financing.
Own a 2013 BMW 3 Series? Keep an eye on it for free.
Add it to your Avturo garage and you get recall alerts for this exact car, an estimate of what it is worth, and a mechanic you can ask about electric water pump failure at any hour.
Free to start. Takes a minute.
Frequently Asked Questions
How much does a BMW electric water pump replacement cost?▼
At an independent BMW shop, about $800 to $1,400 installed including the thermostat, which shares the labor and is usually replaced at the same time; the pump alone runs about $700 to $1,200. YourMechanic's average for the pump on a 328i Gran Turismo xDrive is about $1,000. Use an OEM pump: the OEM pump-and-thermostat kit costs about $585 to $650 in parts.
Which 3 Series engines have the electric water pump?▼
In the F30 generation, the N20 and N26 four-cylinder (320i and 328i, 2012 to 2016) and the N55 six (335i, 2012 to 2015). The B46/B48 four-cylinder in the 2017 and later 330i and 330e uses a mechanical, belt-driven main pump, and the 340i's B58 is a different engine too, so this page does not apply to them. The 328d diesel is also outside it.
What happens when the electric water pump fails while driving?▼
Coolant stops circulating and the engine overheats within minutes. The car will warn you and may cut power; pull over and shut down immediately. Continuing to drive risks a warped cylinder head or blown head gasket, a repair that costs several times the pump job.
Should I replace the thermostat with the water pump?▼
Yes. The thermostat sits in the same area, shares most of the labor, and the part costs about $55. Doing them together costs little more than the pump alone; doing them separately means paying for the same access twice.
How long do BMW electric water pumps last?▼
There is no fixed interval. The pump's motor and bearings wear with use and it can fail with little warning, so a high-mileage car with no record of a replacement should be budgeted for one. A documented replacement with the thermostat removes that uncertainty.
Sources
The facts on this page were last checked against these documents on October 10, 2026. Programs and their coverage end; check the car's VIN with a dealer for what still applies.
- Reference: BimmerWorld: electric water pump for the N20/N26 (F30 and others) (bimmerworld.com)
- Reference: BimmerWorld: electric water pump for the N55 (F30 335i and others) (bimmerworld.com)
- Reference: BimmerWorld: mechanical water pump for the B46 engine (330i) (bimmerworld.com)
- Repair cost estimate: YourMechanic: BMW 328i GT xDrive water pump replacement cost estimate (yourmechanic.com)
- Repair cost estimate: FCP Euro: How to replace the F30 N20/N26 water pump and thermostat (parts prices) (fcpeuro.com)
- Repair cost estimate: BimmerWorld: OEM water pump and thermostat kit for the N20/N26 (F3X) (bimmerworld.com)
More 2013 BMW 3 Series Known Issues
The Same Problem on Other Cars
Comparing candidates? These models have documented water pump failures too:
More BMW Problems
Researching other vehicles? Browse known problems and repair costs for 59 popular models
Checking out a listing for a BMW 3 Series?
Run it through Avturo. It compares the asking price with similar listings, matches the car to documented problems like electric water pump failure, and flags the red flags in the ad before you drive out to see it.
Free to start. We keep your listing while you create your account.