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Ram 1500 — what actually breaks, by engine

2015–2020 · 6,323 federal complaints · 3 engines

Reliability ratings usually stop at the model. But two 1500s with different engines can fail in completely different ways — and the engine is a choice you make at purchase. Here is what owners actually complained about, separated by engine.

Ram 1500
Photo: Kevauto · CC BY-SA 4.0

Ownership profile

Each axis is this model's percentile within its own segment — comparing a pickup's fuel economy against a compact car's would say nothing. Built from EPA test data.

Fuel economy56Running cost11Low emissions44Cabin spacenot measuredCargo spacenot measuredDisplacement56
19 MPG Fuel economy$3,525/yr Running cost470 g/mi Low emissions3.6 L Displacement

Value for money

57/ 100

$27,000

Capability per relative dollar, ranked against the same segment. It divides this model's average percentile across the axes above by its price relative to the segment median — so 80 means it delivers more per dollar than 80% of its class.

Price source: author's estimate, not verified against an authoritative source. Unlike every other figure on this page, the price is not drawn from NHTSA or EPA records and has not been verified against an authoritative source. Treat this one axis as indicative, not exact.

What each engine's complaints are about

Share of component mentions. One complaint can name several components, so these describe what an engine's complaints are about — they are not a failure rate.

Transmission & drivetrainEngineBrakesElectricalSteeringBody & structureFuel systemEverything else

5.7L V8

2015–2020

4,158complaints
Brakes 10%Electrical 15%Steering 18%
Show the numbers
ComponentShareMentions
Transmission & drivetrain8.3%481
Engine8.5%492
Brakes10.0%580
Electrical14.7%853
Steering18.2%1,057
Body & structure3.6%207
Fuel system5.2%304
Everything else31.6%1,832

3.0L V6

2015–2020

1,550complaints
Transmission & drivetrain 10%Engine 26%Fuel system 11%
Show the numbers
ComponentShareMentions
Transmission & drivetrain10.2%259
Engine25.6%648
Brakes2.3%59
Electrical4.8%122
Steering3.6%92
Body & structure0.9%22
Fuel system11.1%282
Everything else41.3%1,046

3.6L V6

2015–2020

615complaints
Engine 10%Brakes 9%Electrical 14%Steering 19%
Show the numbers
ComponentShareMentions
Transmission & drivetrain7.0%61
Engine10.2%89
Brakes9.1%80
Electrical14.2%124
Steering18.5%162
Body & structure2.3%20
Fuel system5.7%50
Everything else33.0%289

Diagrams show cylinder layout and displacement from the decoded VIN data. Forced induction is marked only where the engine designation states it or the specific output leaves no doubt.

Method, sources and limitations

How this was built

  1. Source: NHTSA public complaint database (api.nhtsa.gov), retrieved 2026-08-16. Every complaint carries the first 11 characters of the vehicle's VIN.
  2. Those partial VINs were decoded through NHTSA's vPIC service to identify the exact engine — 98.0% resolved successfully. This is how the data gets to engine level; model-level ratings cannot do this.
  3. Percentages are the share of component mentions, not of complaints. One complaint can name several components, so the figures describe what a given engine's complaints are about — they do not sum to a failure rate.

What this does not tell you

  • This is not a reliability ranking. Complaint totals track how many were sold, not how often they fail. Nobody publishes per-engine sales volume, so comparing totals between engines would be misleading. Read each engine's own breakdown; don't race them against each other.
  • Engines with fewer than 50 complaints are omitted — too small to say anything honest about.
  • Complaints are self-reported by owners. They skew toward problems that are alarming or expensive, and toward vehicles under active recall attention.

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