VTNA to Launch CARB-Compliant Engine for Redesigned VNL, VNR
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plans to launch a Omnibus rule-compliant diesel engine for its revamped longhaul and regional-haul tractors, the .
The truck manufacturer announced plans to apply for certification of the CARB-compliant engine April 29 at the 2025 Advanced Clean Transportation Expo in Anaheim, Calif.
Volvo Group unit VTNA said the engine — a configuration of the Volvo D13 Variable Geometry Turbo engine launched March 10 at American Trucking Associations’ Technology & Maintenance Council Annual Meeting — will be available to order in the near future.
Deliveries of trucks with the new engine are expected to begin in the fourth quarter of 2025, the sister company of Mack Trucks said. The engine is designed to obtain a certification at the 0.05 gram nitrogen oxides rating with reduced particulate matter (PM) emissions.
It features a linear exhaust aftertreatment system, including a diesel oxidation catalyst, diesel particulate filter and selective catalytic reduction system.
VNL and VNR models with the engine will be available with configurations of 425 horsepower/1,750 pound-feet torque or 455 hp/1,850 pound-feet torque.
“We continue to invest in powertrain and vehicle advancements that support our sustainability goals," Says VTNA's Johan Agebrand, shown at an industry trade show in 2024. (John Sommers II for Transport Topics)
“To help customers successfully navigate evolving regulations, Volvo has developed an engine that is intended to meet both Environmental Protection Agency and CARB requirements,” said Johan Agebrand, VTNA director of product marketing.
“We continue to invest in powertrain and vehicle advancements that support our sustainability goals and our commitment to environmental stewardship,” he added.
Volvo Group expects all its trucks on the road to be zero emissions by 2050 and 50% of all the vehicles it sells to be electric by 2030.
The latest engine complements VTNA’s earlier CARB-24 engine for the legacy VNL and VNR models. That D13 engine was unveiled in July 2024.
When the earlier engine was launched, VTNA became the third Class 8 truck manufacturer to offer a CARB-compliant option.
Brian Antonellis of Fleet Advantage and TMC General Chairman Radu Mihai discuss the need for targeted training programs for heavy-duty technicians that build a capable, future-ready workforce. Tune in above or by going to .
Peterbilt in June 2024 became the first Class 8 truck manufacturer to unveil a California-compliant diesel engine, with a modified Paccar MX-13 engine available for its Models 579, 567 and 589 trucks.
Paccar sibling Kenworth announced its own CARB-compliant MX-13 option for the T680, T880 and W990 Class 8 trucks later in June 2024.
CARB’s Omnibus regulations aim to reduce NOx emissions by 75% and PM by 50% from heavy-duty on-road engines for engine model years 2024 through 2026. The reductions are compared with current EPA standards.
However, the agency’s Omnibus and Advanced Clean Trucks rules are under attack from the Trump administration.
On Feb. 14, Administrator Lee Zeldin said EPA will ask Congress to review waivers for the regulations, which aim to cut NOx emissions and transition the trucking industry to electric trucks.
The Advanced Clean Trucks regulation is a zero-emission vehicle sales requirement for truck makers.
The proposals require EPA to grant CARB a waiver of federal rules to proceed.
Trucking stakeholders, including ATA, have been critical of the rules, arguing the required speed of adoption is too fast as the infrastructure is not available and the trucks cost too much compared with existing diesel options.
In January, CARB backed away from seeking a waiver for its Advanced Clean Fleets rule but left the Advanced Clean Trucks and Omnibus NOx rule in place.
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