Heavy Duty Trucking Logo
MenuMENU
SearchSEARCH

CAT Faces Fresh Litigation over Repeated C13, C15 ACERT Emissions Failures

Plaintiffs in the latest class-action lawsuit allege Caterpillar hid details of defects and performance issues from customers that the engine maker knew about.

Jim Park
Jim ParkFormer HDT Equipment Editor
Read Jim's Posts
May 9, 2014
CAT Faces Fresh Litigation over Repeated C13, C15 ACERT Emissions Failures

Owners of Caterpillar C15 (shown) and C13 engines claim the manufacturer downplayed defects and performance issues with the engines.

5 min to read


Owners of Caterpillar C15 (shown) and C13 engines claim the manufacturer downplayed defects and performance issues with the engines.

A sixth proposed class-action has been has been filed against Caterpillar alleging emission-control systems on its model-year 2007 thru 2010 C13 and C15 engines are defective and that Cat was aware of the problem, but kept producing the engines before eventually withdrawing entirely from the on-road heavy-duty diesel engine market.

The latest class-action involving alleged failures of Caterpillar's Advanced Combustion Emissions Reduction Technology, also known as ACERT, was filed on April 30 in U.S. District Court for the District of Minnesota by Scenic Boundaries Trans.

Ad Loading...

The Scenic Boundaries case specifically alleges that the exhaust emission control system, known as the Caterpillar Regeneration System “is defective in material and/or workmanship causing the vehicle to not function as required under all operating conditions, on a consistent and reliable basis, even after repeated emissions warranty repairs and replacements. These repeated warranty repairs and replacements failed to repair or correct the CRS defect resulting in damages, including diminished value of the vehicles powered by model-year 2007 CAT Engines, and the costs to re-power the vehicles with diesel engines that are compliant with the 2007 EPA Emission Standards.”

The suit also notes that because the trucks could only be repaired at Caterpillar-authorized repair shops using proprietary tools and software, owners had no choice but to tow the trucks to dealers at tremendous cost. The website, law.com notes that the plaintiffs also accuse Caterpillar of breach of express and implied warranties, fraudulent concealment, and violations of Minnesota’s deceptive trade practices and consumer fraud acts.

One of the attorneys representing Scenic Boundaries, Paul Weiss of Complex Litigation Group in Highland Park, Ill, says there are dozens of previous cases on record, all alleging the identical problem.

Ad Loading...

It's the same case, the same issue, the same problem," Weiss told truckinginfo.com. "Cat will try to tell us each case is different or that various owners didn't properly service the truck or ignored the warnings, but it's all the identical problem. There are already class-actions pending in Florida, California, Georgia, Pennsylvania, Louisiana and New Jersey, and we're planning on bringing more, though they are all likely to wind up in one court."

CAT's Clean Gas Induction system was a variation on the EGR theme, but didn't quite turn out to be the panacea CAT officials had promised when it was unveiled at MATS in 2006.

Caterpillar has already asked to have this latest case and five other class actions alleging the same defects in the company’s C13 and C15 engines consolidated and transferred to federal court in the Southern District of Florida, Weiss says.

Other actions against Caterpillar date back to March of 2010, and those claim essentially the same problems were occurring with 2007 and 2008 model-year C13 and C15 engines. In those suit, plaintiffs Thomason Trucking, Paul Trucking, and Tapley Forestry Service, all based in Oklahoma, say they bought a total of 90 trucks with C15 engines in 2007 and 2008, but were not warned of the engines' defects.

Thomason Trucking has since settled with Caterpillar, but declined to discuss the terms of the settlement when contacted by truckinginfo.com.

Caterpillar was sued again in the spring of 2013 by BK Trucking which alleged that Caterpillar has known for years that its Caterpillar C13 and C15 Advanced Combustion Emission Reduction Technology diesel engines were defective, yet concealed the problems while still touting the engines’ high quality and reliability. That action was filed in New Jersey.

Ad Loading...

Weiss says many large fleets have already settled the claims with Caterpillar, but the terms of those agreements remain confidential.

"Several large fleets and owners sued Caterpillar back in 2010," Weiss says. "It appears that Cat resolved all the lawsuits where they were sued by somebody that had money. These well-financed companies like Western Star and Walgreen's Company, to name a couple, sued CAT but the settlements were all confidential."

Weiss says even the judges do not know the terms of the earlier settlements.

The fuel dosing module used to increase the internal temperature of the diesel particulate filter during regens proved problematic, clogging frequently and requiring significant maintenance.

"The settlements were confidential and I don't know the terms," he says. "The judges in the cases we are bringing will certainly be aware that there have been settlements, but the terms haven't been disclosed. I have heard from my sources that they run into the tens of thousands of dollars per engine, but I don't know that to be true from first hand information."

Results of previous settlements, however, will not set a precedent for the pending litigation.

Ad Loading...

"All the cases were settled confidentially," says Weiss. "But do I think a judge would look at that and raise her eyebrows? I'd say yes. I think the judge knows CAT has already settled with one group."

Weiss believes Caterpillar has already settled claims on a couple of thousand engines, but estimates there were as many as 40,000 of those engines produced -- many of them owned by small fleets or independents without the wherewithal to take on a company like Caterpillar.

"The bigger fleets could afford to take on Caterpillar, but for small fleets, the 1 to 5 truck operator, those kinds of failures meant huge expenses which eventually led to bankruptcy for a lot of them," he suggests. "Most folks could never afford to take on a company like Caterpillar on an hourly basis. We take these cases on a contingency basis and only collect a fee if we win."

Weiss estimates the diminution of value to be around $50,000 per engine. He reckons it will cost the C13 and C15 owners close to that to replace those engines -- if they can be replaced.

"Now that the market knows the value of those engines, owners will never get a fair residual on the trucks," he maintains. "If they had tried to sell the trucks in 2008, before everyone knew them to be lemons, it might have been different."

Ad Loading...

Weiss said he expects his case will go to trial by the end of the year.

Truckinginfo.com contacted Caterpillar for comment, but the company has not responded.

Representing the plaintiffs (Scenic Boundaries Trans) are:

Richard Burke and Jamie Weiss of Complex Litigation Group, Highland Park, Ill.

Garrett Blanchfield and Roberta Yard of Reinhardt Wendorf & Blanchfield, St. Paul, Minn.; and

Ad Loading...

Jonathan Shub of Seeger Weiss, Philadelphia.

More Fleet Management

TEN disaster prep.
Fleet ManagementMay 1, 2026

How Fleets Can Avoid Equipment Blind Spots in Disaster Response

When the unexpected happens, how you react to, and deal with operational blind spots is critical. Here’s how to keep you recovery on track, when nothing is normal.

Read More →
Illustration of cybersecurity images with "The Cyber Stop" text
Fleet Managementby Ben WilkensApril 30, 2026

AI Security Risks for Trucking Fleets: What to Know About Deepfakes and Agentic AI

As fleets adopt artificial intelligence for routing, maintenance, and load matching, new security risks are emerging. Learn where the vulnerabilities are and how to put the right controls in place.

Read More →
Mobile tablet showing Motus screen against highway background with Motus logo

FMCSA’s Motus System Is Coming. What Fleets Need to Know Now

The long-awaited registration system promises a single portal — and tighter fraud controls.

Read More →
Ad Loading...
CargoNet 2026 Qi report.
Fleet Managementby News/Media ReleaseApril 24, 2026

Cargo Theft Incidents Fall in Q1, but Organized Crime and Impersonation Drive New Risks

CargoNet reports fewer supply chain crime events to start 2026. But losses hold steady as organized crime shifts tactics toward impersonation schemes and high-value goods.

Read More →
Graphic with light bulbs, HDT Truck Fleet Innovators logo, and the word Nominations
Fleet ManagementApril 24, 2026

Nominations Open for HDT Truck Fleet Innovators 2026

Heavy Duty Trucking is searching for forward-looking leaders at trucking fleets as nominations for HDT’s Truck Fleet Innovators 2026. Deadline is May 15.

Read More →
Illustration with trojan horse and lock with inside of cargo container in background
Fleet Managementby News/Media ReleaseApril 23, 2026

New Trojan Driver Cargo Theft Scam Bypasses Carrier Vetting Systems

Cargo theft rings plant operatives as drivers inside legitimate, fully vetted carriers, then execute coordinated thefts that look like a traditional straight theft from the outside.

Read More →
Ad Loading...
ATA Truck Tonnage Index March 2026.
Fleet Managementby News/Media ReleaseApril 22, 2026

March Truck Tonnage Posts Strongest Annual Gain Since 2022

A modest sequential increase capped the strongest quarterly performance in years, signaling continued freight momentum in early 2026.

Read More →
Toll road.
Fleet Managementby Jack RobertsApril 22, 2026

Ohio Turnpike Targets $5.2 Million in Unpaid Tolls from Trucking Firms

More than 300 carriers across 26 states have been sent to collections as the Ohio Turnpike cracks down on toll evasion and delinquent payments.

Read More →
Illustration with ATRI logo and square blocks spelling out "research"
Fleet Managementby Deborah LockridgeApril 20, 2026

'Beyond Compliance,' Regulations, Driver Coaching on ATRI’s 2026 Research List

The American Transportation Research Institute will examine driver coaching, regulatory impacts — including the "Beyond Compliance" concept —and weather disruptions that shape trucking operations.

Read More →
Ad Loading...
Brian Antonellis, senior vice president, fleet operations, Fleet Advantage.
Fleet Managementby Jack RobertsApril 17, 2026

Fleet Advantage's Brian Antonellis on the Growing Need to Replace Old Trucks

Fleet Advantage's Brian Antonellis says it's time for fleets to get back to the fundamentals of good maintenance practices. And that includes replacing older, inefficient equipment.

Read More →