July 2026

2010 Mini Cooper S Fuel Pump: The Complete Guide to Symptoms, Replacement, and Best Options

The bottom line: If you own a 2010 Mini Cooper S and are experiencing hard starting, rough idling, loss of power, or a check engine light, the high-pressure fuel pump (HPFP) is the most likely culprit. This is a well-known weak point on the N14 engine, and replacement is often the only permanent fix. Expect to pay between $800 and $1,300 for a genuine or OEM-quality replacement part, but there are high-performance aftermarket options that offer better value and durability.

Understanding the Fuel System on the 2010 Mini Cooper S

The 2010 Mini Cooper S uses a direct injection system, which means fuel is injected directly into the combustion chamber at extremely high pressures—typically around 1740 psi . Unlike older cars that rely solely on a low-pressure pump inside the fuel tank, the 2010 Mini Cooper S has two pumps: a low-pressure pump in the tank and a high-pressure fuel pump mounted on the engine, driven by the camshaft .

The HPFP on the 2010 Mini Cooper S is part of the N14 engine family, which was used in the R56 chassis from 2007 to 2010 . This pump is the same part used in the 2007-2010 R56 Cooper S, 2008-2010 R55 Clubman S, and 2009-2010 R57 Convertible S . The OEM part number for this pump is 13517588879 .

Common Symptoms of a Failing High-Pressure Fuel Pump

Recognizing the early warning signs can save you from being stranded. Here are the most common symptoms:

1. Longer Cranking Times
The engine takes noticeably longer to start, especially when cold. The fuel system struggles to build the necessary pressure to fire the injectors .

2. Rough Idling and Stalling
The engine may idle roughly, stumble, or even stall at stoplights or when coming to a stop. This is often worse when the engine is cold .

3. Loss of Power Under Acceleration
You may feel a significant drop in power, especially at higher RPMs or when you stomp on the gas. The engine simply isn't getting enough fuel to perform .

4. Check Engine Light
The check engine light will almost always come on. Common diagnostic trouble codes (DTCs) include P0087 (Fuel Rail/System Pressure - Too Low) and P10AF (High Pressure Fuel Pump, Mechanical) .

5. Fuel Odor
In rare cases, you might smell fuel, though this is more often a sign of a leak in the fuel lines or injectors rather than the pump itself .

Troubleshooting the 2010 Mini Cooper S Fuel Pump

Before you throw money at a new pump, follow these steps to confirm the diagnosis:

Step 1: Scan for Codes
Use an OBD-II scanner to check for stored codes. P0087 and P10AF are the most common HPFP-related codes . If you see these, the pump is likely failing.

Step 2: Check Fuel Pressure
Using a fuel pressure gauge, measure the pressure at the fuel rail while the engine is running. It should be around 1740 psi. A significant drop under load points to a bad HPFP .

Step 3: Inspect the Cam Follower (Tappet)
This is a critical step that many mechanics overlook. The HPFP is driven by the camshaft through a cam follower. These followers are known to wear down over time, especially if oil changes are neglected . If the follower is worn, it will prevent the pump from building proper pressure. This part should be replaced every 30,000 to 50,000 miles as preventative maintenance .

Step 4: Inspect Wiring and Connectors
Look for any damaged, corroded, or loose wiring on the HPFP connector. A bad electrical connection can cause the pump to malfunction .

Replacement Options: What to Buy

When it's time to replace the HPFP on your 2010 Mini Cooper S, you have several options:

1. Genuine OEM / MINI Parts
The OEM part number is 13517588879 . A genuine MINI pump from the dealer typically costs between $1,100 and $1,300 . This is the exact same part that came with your car from the factory.

2. OEM-Supplier Parts
Some pumps are made by the same supplier that manufactures for MINI. These are often sold at a slight discount. For example, the ECS Tuning listing shows a genuine MINI/PSA supplier part for the N14 engine at around $832 .

3. Aftermarket Performance Pumps
For owners who want a more durable and higher-flowing option, aftermarket pumps like the KEMSO 340LPH are available. These pumps are designed as direct OEM replacements but offer significantly higher flow rates (340 liters per hour compared to stock) and are compatible with both gasoline and E85 . They are also backed by a lifetime warranty, which is a major advantage over OEM parts .

Real-World Issues and Solutions

The Cam Follower Problem
The most common issue leading to HPFP failure on the 2010 Mini Cooper S is a worn cam follower. As the follower wears down, the pump loses its ability to generate high pressure. This is a well-documented problem on the N14 engine . The solution is simple: replace the cam follower every 30,000-50,000 miles as preventative maintenance, and always use high-quality engine oil .

Fuel Quality Matters
Using low-quality or contaminated fuel can introduce debris into the HPFP, causing premature failure. Always use premium gasoline from a reputable station .

The "Sudden Power Loss" Scenario
A common scenario: You're accelerating onto the highway, and suddenly the car loses power. The check engine light comes on. You scan the codes and find P0087. After checking fuel pressure, you find it's well below spec. When you pull the HPFP, you find the cam follower is severely worn. Replacing both the cam follower and the HPFP restores full power .

Avoid These Mistakes

Don't ignore the cam follower. If you replace the HPFP without checking the cam follower, the new pump will fail prematurely because the worn follower will damage it .

Don't use the wrong pump. The 2010 Mini Cooper S uses the N14 engine pump (part 13517588879). The N18 engine, which was introduced in later models, uses a different pump (part 13517592429) . Using the wrong pump will not work.

Don't skip the fuel filter. When replacing the HPFP, it's a good idea to also replace the fuel filter to prevent contaminants from damaging the new pump .