Ford Mondeo 1.8 TDCi Problems

Some common Ford Mondeo 1.8 TDCi problems:

  • Starting problems, reduced power
  • Erratic revving or misfiring
  • Harsh gear shifting or gear slippage, and more!

TDCi stands for Turbocharged Diesel Commonrail Injection. The 1.8 TDCi engine was used in Ford Mondeo 3 hatchbacks and sedans produced from 2007 to 2010. Though the engine was quite reliable, some problems were intermittent.

We will address those problems and their symptoms so that you can quickly identify them. Learn what to do when these problems occur and how much you need to spend to solve the problems.

Ford Mondeo 1.8 TDCi: Common Problems, Symptoms, and Solutions

The engine produces 125 HP and 340 Nm of torque to make the Mondeo 4 a decently powerful car for family use. Here are some common problems you might experience with the model.

Engine ProblemsThe car won’t start easily.● Checking the battery, alternator, starter motor, fuel pump, ignition system, etc.
Rough idling● Checking the Camshaft Position Sensor, idle spring, etc.
Poor acceleration● Checking the fuel filter and catalytic converter.
Reduced power● Checking for cracks or leaks in the turbo hose and cleaning the intercooler.
Erratic revving or misfiring● Checking the timing belt for cracks or wear.
Low fuel mileage● Checking for oil or fluid leaks, clogged filters, etc.
Transmission ProblemsHarsh gear shifting or gear slippage● Checking the clutch pack for wear and the torque converter.
ECU ProblemsLimp mode turning on, misfiring, or check engine light● Checking electrical connections, sensors, and the ECU.

What Engine Problems Are Common In Ford Mondeo 1.8 TDCi?

This turbocharged diesel engine is highly capable when appropriately maintained. As the engine ages, it can develop some common issues. Let’s check the Ford Mondeo 1.8L TDCi engine problems and learn how to solve them accordingly.

#1 – Starting Problems

It is probably the most common problem in 1.8 TDCi engines. The problem mostly occurs when the engine is old, or you leave the car for quite a while. A cold start can be struggling, and you might hear the engine trying to crank.

The reasons for this problem-

  • A bad battery, faulty alternator or starter motor, faulty ignition system, or fuel pump issues.

Read This Informative Article: Life Expectancy of Ford 1.5 TDCi Engine

What Should You Do?

  1. You should check the battery first.
  2. Make sure it is properly charged and the terminals are tightly connected.
  3. Check if the alternator is working or if the fuel pump is producing enough pressure. If not, you should replace the faulty component.
  4. The starter motor and ignition systems should also be checked. Replace them if necessary.

You can check this video to see how to diagnose this problem.

#2 – Rough Idling

When the car is idle, you may experience an erratic movement of the RPM. It is caused by a faulty Camshaft Position Sensor or idle spring. The motor controlling the idle speed can also go bad.

What Should You Do?

Get the Camshaft Position Sensor checked and replace it if necessary. It may cost $70-$150. Replacing the idle spring costs less than $50, and the idle motor costs about $200.

#3 – Poor Acceleration

Ford Mondeo 3 sedan takes about 9.7 seconds to go from zero to 60 miles per hour. Though that doesn’t count as super fast acceleration, the acceleration can sometimes worsen. The response time will increase to make the car feel sluggish.

A clogged fuel filter may be the main reason for this problem. Catalytic converters can also go bad to cause poor acceleration.

What Should You Do?

  1. Take the fuel filter out and clean it thoroughly.
  2. You should follow the instruction manual to know the cleaning routine of the filter.
  3. Also, check the catalytic converter. If a catalytic converter replacement is necessary, you need to spend from $300 to $800.

#4 – Reduced Power

The 1.8 TDCi engine can produce 125 HP to give a maximum speed of 124 miles per hour. But the power may drop drastically sometimes. Cracks or leaks in turbo hoses mainly cause it. If you see black smoke from the exhaust, one or more turbo hoses may be split.

Sometimes, there can be unusual sounds from the engine. If the bolts on the vibration damper aren’t tight, the crankshaft might not be able to deliver full power.

What Should You Do?

  1. Get the turbo system and the vibration damper thoroughly checked by an experienced mechanic.
  2. Make sure all the leaks are fixed and the bolts are tightened. This might cost $100-$200.

#5 – Erratic Revving or Misfiring

The timing belt is a crucial component of the engine. If the belt tension isn’t right, it can slip to cause erratic revving. Due to its material, the belt can wear over time or get cracked completely.

What Should You Do?

Timing belts usually last for up to ten years. So, you should check it at regular time intervals. If the belt is worn or cracked, you should replace it. The cost will be $400-$500.

#6 – Low Fuel Mileage

Low mileage is common among Ford 1.8 TDCi engine problems. When the engine is properly maintained, the fuel mileage is just over 40 MPG.

That impressive mileage deteriorates quickly due to oil or fluid leaks. Clogged filters can also escalate the problem.

What Should You Do?

  1. Checking the oil and fluid level regularly is a preventive measure here.
  2. But if the mileage is too low, you should check for signs of oil or fluid dripping beneath the car.
  3. Fix the leaks as quickly as possible.
  4. Also, check for clogged filters and clean them.

Do Ford Mondeo Have Transmission Problems?

Ford Mondeo 1.8 TDCi problems include harsh gear shifting or gear slippage. The problems are caused by different reasons for sedans and hatchbacks. The hatchback model has a six-speed manual transmission, and the sedan has a six-speed automatic transmission.

In manual transmission models, the clutch can be worn after 100,000 miles. The dual-mass flywheel may also be worn or damaged. In automatic transmission models, the torque converter can go bad to cause this problem.

Remember, these transmission problems can also occur on other Ford vehicles. Check Ford Fiesta Transmission Problems here.

What Should You Do?

Get the clutch pack, or torque converter checked based on your car model. Replacing these components might cost $500 to $1,200. But the if entire transmission system goes bad, you might need anywhere between $2,000 to $3,500 to replace it.

What Are the ECU Problems on Ford Mondeo?

The onboard computer can sometimes show wrong readings due to faulty sensors. Electrical connections may also go wrong in some cases.

If the sensors related to the engine are bad, the car might lose its performance, start misfiring or have a hard time starting. Faulty connections will cause the check engine light to come on. These problems can be visible on other Ford models too. Check Ford 3.3 V6 Problems here.

What Should You Do?

Run onboard diagnostics to figure out the problem. Check if all the electrical connections are secure. If the ECU is bad, you need about $400-$1,000 to replace it.


Check the answers to some common questions regarding 1.8L TDCi problems in Ford Mondeo.

Does Ford Mondeo 1.8 TDCi has a DPF?

DPF stands for Diesel Particulate Filter and is responsible for maintaining emission norms. Ford Mondeo didn’t introduce DPF until the fourth generation. So, your car might not have a DPF if it is of the third generation.

Why the power steering is hard to turn on Ford Mondeo 1.8 TDCi?

If the power steering fluid level is too low, it might be too hard to turn. So, you should regularly check the fluid level of the power steering.

Can I clean turbo vanes on my Ford Mondeo 1.8 TDCi?

Turbo vanes become sticky due to the carbon deposit. You can use store-bought turbo cleaners to clean turbo vanes.

Key Takeaways:

Engine problems are common in any engine, and the Ford Mondeo 1.8 TDCi problems are any out of the context. There are several problems that can be encountered in this engine. However, most of them are fixable easily than any other highly features engines. However, the following key points may summarize the Ford Mondeo 1.8 TDCi Problems at a glance.

  • Third-generation Ford Mondeo models, from 2007 to 2010, are prone to engine and transmission problems.
  • Starting problems, rough idling, poor acceleration, power loss, low mileage, gear slippage, and harsh shifting noise are the most common in 1.8 TDCi.
  • These problems mainly occur when the engine has run a few thousand miles. Due to these problems, fuel mileage can drastically reduce.
  • Most of these problems require prompt servicing, and replacement costs can be a few hundred dollars.

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