2015 Freightliner Business Class M2: common problems

Owners of the 2015 Freightliner Business Class M2 filed 4 complaints with NHTSA, most often about electrical system and engine and cooling. Details by component below, with sources.

Key figures

Owner complaints: 4

What fails most often

1 Electrical system 50% of all complaints
2 Engine and cooling 25% of all complaints
3 Steering 25% of all complaints

Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Electrical system: 2 complaints (50% of all).
Engine and cooling: 1 complaints (25% of all).
Steering: 1 complaints (25% of all).

Symptoms owners describe

How many of the 4 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

warning lights, check engine3 · 75%
steering or power steering problems2 · 50%
A/C or heater1 · 25%

Components owners complain about

Component	Owner complaints	involving a crash	Technical service bulletins (TSB)
Electrical system	2	0	0
Engine and cooling	1	0	0
Steering	1	0	0

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

Noticed the steering linkage had an unusual amount of free play, Thinking it might be the bearing had failed. Bought a new part and had the one on the truck taken apart. When it was removed, it was noted that the linkage was not installed correctly.
Steering · 2022-09-06 · NHTSA complaint #11483147
While driving the tractor/trailer down the highway an amber warning light came on the dash. Within a matter of seconds the entire truck completely shut down while at highway speeds. The driver lost all power steering, and control of the vehicle. He was able to pull off the side of the road without injury.
Electrical system · 2015-11-04 · NHTSA complaint #10788398
While driving the tractor/trailer down the interstate an amber warning light came on the dash. Within a matter of seconds the entire truck completely shut down while at highway speeds. The driver lost all power steering, and control of the vehicle. He was able to pull off the side of the road without injury.
Electrical system · 2015-11-04 · NHTSA complaint #10788393
While driving at 45 mph, the intake heater warning light illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 1,500.
Engine and cooling · 2015-05-06 · NHTSA complaint #10714868

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

20153
20221

Comparison

By complaint count this model year ranks 15,521 of 36,656 model years in the NHTSA data (top 42% most complained about).

On average one model year of the Business Class M2 has 3 complaints (21 years in the data). This year has 4, above average.

What to check before buying

Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Steering. Steering play, power assist, rack and tie rods after a wheel impact.

Other years of this model

Questions and answers

What are the most common problems with the 2015 Freightliner Business Class M2?

Owner complaints to NHTSA most often mention: electrical system, engine and cooling, steering. Total complaints: 4. The most frequent symptoms in complaint texts: warning lights, check engine (75%), steering or power steering problems (50%), A/C or heater (25%).

How many service bulletins (TSB) were issued for the 2015 Freightliner Business Class M2?

NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 2015 Freightliner Business Class M2 from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 2015 models

Freightliner Cascadia 2015

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.