The Quick Answer
Take the exam that matches your degree. A civil engineering degree prepares you for the FE Civil. A mechanical engineering degree prepares you for the FE Mechanical. Choosing the "other" discipline because you heard it's easier is almost always a mistake — you're trading familiar content for unfamiliar content with no net advantage.
The Decision in 30 Seconds
Did you study civil engineering? Take FE Civil. Did you study mechanical engineering? Take FE Mechanical. Done.
If you're still reading, you're probably in one of the edge cases: a general engineering degree, an engineering technology degree, or a situation where your coursework split across both disciplines. Let's sort that out.
What Each Exam Actually Covers
The FE Civil has 18 knowledge areas. Its heaviest topics are Water Resources and Environmental Engineering (10–15 questions), Mathematics (8–12), Statics (8–12), Mechanics of Materials (7–11), Geotechnical Engineering (6–9), and Surveying (6–9). If you took courses in hydrology, geotech, transportation, and structural analysis — that's your exam.
The FE Mechanical has 13 knowledge areas. Its heaviest topics are Thermodynamics (13–20 questions), Dynamics (9–14), Mechanics of Materials (8–12), Heat Transfer (7–11), Fluid Mechanics (7–11), and Machine Design (7–11). If you took thermodynamics, heat transfer, machine design, and vibrations — that's your exam.
The overlap between the two exams is smaller than people assume. Both test Mathematics, Statics, Mechanics of Materials, Fluid Mechanics, and Engineering Economics. But the Civil exam adds surveying, geotech, water resources, transportation, structural design, and construction — topics a mechanical engineering student likely never studied. The Mechanical exam adds thermodynamics at a much deeper level, heat transfer, machine design, controls, and manufacturing — topics a civil engineering student likely never studied.
Edge Cases
"I have a general engineering degree."
Look at your transcript. Count the courses that align with each exam's topic list. If you took more civil-adjacent courses (structures, geotech, hydrology, transportation), take Civil. If you took more mechanical-adjacent courses (thermo, heat transfer, machine design, dynamics), take Mechanical. If it's genuinely 50/50, take whichever discipline you plan to practice in — the EIT credential and eventual PE will be in that discipline.
"I have an engineering technology degree."
Same logic. Match your coursework to the exam topics. Engineering technology programs sometimes have a more applied focus that aligns well with specific FE topics. Check your state board's eligibility requirements — some states have different experience requirements for ET graduates.
"I heard FE Mechanical has a higher pass rate."
It does — historically slightly higher than Civil. But this likely reflects the candidate pool, not inherent difficulty. Mechanical engineering programs tend to map very tightly to the exam specification, which means ME graduates are well-prepared by default. Taking Mechanical when your background is Civil to chase a modest pass rate difference, while simultaneously losing familiarity with half the exam topics, is bad math.
"I'm years out of school and don't remember either discipline."
Take the exam in your degree discipline anyway. Relearning material you once knew is significantly faster than learning it for the first time. Your coursework built neural pathways that reactivate during review, even if they feel dormant. A mechanical engineer re-learning thermodynamics will get up to speed faster than they'd learn geotechnical engineering from scratch.
The Real Differentiators
| FE Civil | FE Mechanical | |
|---|---|---|
| Knowledge areas | 18 (broader, shallower) | 13 (narrower, deeper) |
| Heaviest topic | Water Resources (10–15 Q) | Thermodynamics (13–20 Q) |
| Unique topics | Geotech, Surveying, Transportation, Construction | Thermo (deep), Heat Transfer, Machine Design, Controls |
| Math intensity | Moderate | Higher (unit conversions, multi-step calcs) |
| Pass rate (1st time) | around 70% | historically the highest among FE disciplines |
Ready to start? Our discipline-specific guides cover exactly what to study and in what order:
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