Who Makes Jeep Diesel Engines: The Ultimate Manufacturer Guide

Jeep is famous for rugged vehicles, but not everyone knows where their diesel engines come from. If you’ve ever wondered who builds these engines, the answer is more complex than you might think.

Jeep’s diesel engines have a global story, with different makers depending on the model, year, and region. This article explains who makes Jeep diesel engines, which models use them, and how these engines compare to others.

You’ll also find some surprising facts that most beginners miss.

Jeep Diesel Engines: Who Builds Them?

Jeep is part of Stellantis (previously Fiat Chrysler Automobiles), and it does not make its own diesel engines. Instead, Jeep uses engines from other companies. The main sources are:

• VM Motori (Italy)
• Fiat Powertrain Technologies (Italy)
• Cummins (USA)
• Mercedes-Benz (Germany; in older models)

The engine source depends on the region and model. For example, European Jeeps often use Italian engines, while US models sometimes use Cummins. Let’s look at each provider.

Vm Motori: The Main Supplier

VM Motori is an Italian company specializing in diesel engines. It has supplied Jeep for many years. Most Jeep diesel engines in Europe and Asia come from VM Motori.

Some popular VM Motori-powered Jeeps:

• Jeep Grand Cherokee (3.0L EcoDiesel V6)
• Jeep Wrangler (2.8L CRD and 3.0L EcoDiesel)

VM Motori engines are known for:

• Low fuel consumption
• Strong torque
• Durability

Here’s a quick comparison of two VM Motori engines used in Jeeps:

Fiat Powertrain Technologies

Fiat Powertrain is another Italian source. Some smaller Jeep models, especially in Europe, use Fiat Multijet diesel engines. These engines are compact and efficient.

Examples:

• Jeep Compass (1.6L Multijet)
• Jeep Renegade (1.6L and 2.0L Multijet)

These engines focus on:

• Fuel efficiency
• Low emissions
• Urban driving

Here’s a comparison between Fiat and VM Motori diesels:

Cummins: For Special Models

In the US, Cummins diesel engines are used in some pickup trucks under the Ram brand, which is related to Jeep. However, Jeep itself rarely uses Cummins engines directly. Still, many off-road enthusiasts swap Cummins engines into Jeep Wranglers for extra power and reliability.

What sets Cummins apart:

• High durability
• Heavy-duty performance
• Excellent for towing

Cummins engines are mostly found in the Ram 2500/3500, not in factory Jeeps.

Mercedes-benz: The Past Connection

Before Fiat Chrysler, Jeep sometimes used Mercedes-Benz diesel engines. For example, the Jeep Grand Cherokee (2007–2008) used a 3.0L V6 CRD engine from Mercedes. This engine was smooth, powerful, and reliable.

After Fiat took over, Jeep stopped using Mercedes engines.

How Jeep Diesel Engines Compare To Others

Jeep’s diesel engines are not made in-house. This is different from brands like Toyota or Ford, which build their own diesel engines. Jeep relies on partners for engine technology.

Let’s compare Jeep diesel engines to similar SUVs:

Jeep’s 3. 0L EcoDiesel is strong in torque and fuel economy, giving good balance for off-road and highway driving.

Surprising Insights And Common Mistakes

Most beginners think Jeep builds its own engines, but it rarely does. Some believe all Jeep diesels are the same, but engine sources change by country and year.

Two non-obvious facts:

• Jeep’s diesel engines often meet strict European emissions standards, which is why Italian companies are chosen.
• The EcoDiesel engine, though used in several Jeep models, is not exactly the same in every vehicle. Tuning and accessories differ, so performance can vary.

A common mistake: Assuming you can use any diesel fuel in a Jeep. Some engines need ultra-low sulfur diesel, especially in newer models.

Why Jeep Uses Outsourced Diesel Engines

Making diesel engines is expensive and requires special technology. Jeep focuses on building vehicles, not engines.

By sourcing from experts like VM Motori and Fiat, Jeep gets reliable engines and can offer models worldwide.

Jeep also benefits from global partnerships. This allows them to adapt quickly to changing laws and market demands.

Real-world Example

The Jeep Grand Cherokee EcoDiesel is a great example. Its 3.0L V6 engine is made by VM Motori. Drivers report:

• Real-world fuel economy of 25–30 mpg
• Strong towing capacity (up to 7,200 lbs)
• Low maintenance costs compared to some rivals

This engine helped Jeep sell more Grand Cherokees in Europe, where diesel is popular.

For more technical details, see this VM Motori overview.

Frequently Asked Questions