What does a fuel pressure regulator replacement on my Mercedes-Benz involve?

Mechanic will read the ECU for possible fault codes related to the fuel system. Mechanic will inspect the fuel supply system and the fuel pressure regulator. If necessary, the mechanic will replace the faulty fuel pressure regulator. Mechanic will advise if any other parts need to be replaced (like the oil filter, if it has been affected by the fuel). Mechanic will inspect the fuel supply system again for any leaks and test drive the car. Mechanic will make adjustments if necessary.

What happens when a fuel sensor goes bad on my Mercedes-Benz?

When the engine runs rough. When there is fuel leaking out of the regulator. When there is a strong smell of fuel in the engine bay. When the 'Check Engine' light on the car's dashboard is on. When the car doesn't perform as well as usual. When there is black smoke coming from the exhaust. When the car fails an emissions examination. When the car's fuel consumption is higher than usual.

How long will a fuel pressure regulator replacement take on my Mercedes-Benz?

A fuel pressure regulator replacement usually takes around 1 hour, but can take less or more time. Ultimately, the time that the job will take will depend on a number of factors, like your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.

How often should I replace my Mercedes-Benz fuel pressure regulator?

When the regulator does not work correctly the fuel pressure to the engine will be off. Either pushing too much fuel towards the engine or too little. This can, for example, lead to an engine that runs too rich, leading to poor fuel consumption. In extreme cases leaks in the regulator can cause the engine's cylinders to flood by an excess of fuel. In turn it also contaminates the engine oil. This can cause damage to the engine and furthermore lead to potentially dangerous situations. Should you experience problems with the fuel supply, then it is advisable to have the system and the fuel pressure regulator inspected and, if necessary, have the regulator replaced. Seeing that the fuel pressure regulator is especially prone to deterioration over time it should always be replaced as and when stipulated in the guidelines set out by your car's manufacturer.

How much does it cost to replace a fuel sensor on Mercedes-Benz?

Prices for a fuel pressure regulator replacement range from £200 to £300 with an average cost of £250. Ultimately, the cost of replacing a fuel pressure regulator depends on your car and what parts your car's manufacturer recommends using for the replacement. Find out what you could save by having your fuel pressure regulator replaced by ClickMechanic by selecting your car at the top of this page!

Can local garages offer home collection and delivery for Mercedes-Benz fuel pressure regulator replacement?

Yes, many local garages are able to offer collection and delivery for a fuel pressure regulator replacement on your Mercedes-Benz. With ClickMechanic collection & delivery is free if your vehicle is drivable. Once booked a mechanic will pick up the vehicle on the day and time of your choice, do the work, and return the vehicle at a time convenient to you. Simply enter your vehicle registration number and postcode to get an upfront price for a fuel pressure regulator replacement on your Mercedes-Benz.

Can mobile mechanics do Mercedes-Benz fuel pressure regulator replacement at my home or office?

Yes, mobile mechanics can do a fuel pressure regulator replacement at your home or office on your Mercedes-Benz, provided there is a safe and sufficient space to conduct the repair or replacement. With ClickMechanic, once booked for a date and time of your choice, your booking will be offered to vetted mobile mechanics in your area.

Mercedes Fuel Pressure Regulator Replacement

D.N Motor Services

Rating: 4.9 out of 5

21 Reviews

Garage in Waterlooville, 11 years of experience

D.N Motor Services offers all aspects of vehicle servicing and repair, including but not limited to: Locking wheel nut removal Clutch replacements Routine servicing and maintenance MOT failure re...

“He was very knowledgable and professional. Carried out the work required with skill. Good communication with me prior to work being carried. Thank you, I am grateful”

VIJAY • 25th January 2026

Mercedes-Benz M-Class • Fuel pressure regulator replacement

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Name	Average Cost
Mercedes-Benz B-Class	£197	Get exact price
Mercedes-Benz C-Class	£95	Get exact price
Mercedes-Benz E-Class	£261	Get exact price

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Frequently asked questions about Mercedes-Benz fuel pressure regulator replacement & repairs

What does a fuel pressure regulator replacement on my Mercedes-Benz involve?

What happens when a fuel sensor goes bad on my Mercedes-Benz?

How long will a fuel pressure regulator replacement take on my Mercedes-Benz?

How often should I replace my Mercedes-Benz fuel pressure regulator?

Can local garages offer home collection and delivery for Mercedes-Benz fuel pressure regulator replacement?

Can mobile mechanics do Mercedes-Benz fuel pressure regulator replacement at my home or office?

How much does a Mercedes-Benz fuel pressure regulator replacement cost?

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