UPSC IES Exam Pattern and Syllabus 2023: Know the Full Details here!



The Union Public Service Commission conducts UPSC ESE (IES) Exam. Its Pattern includes two offline exams. There are three stages in the UPSC ESE (IES) selection process – Preliminary exam, Main exam, and Interview round. The official notification for IES 2023 has already been released on 14th September 2022. The IES 2023 Prelims exam will be held on February 19, 2023. The candidates should properly know the UPSC IES exam pattern and syllabus. In this article, we will provide the proper guide for the UPSC IES Exam Pattern and Syllabus 2023.

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UPSC IES Exam Pattern and Syllabus 2023: Details

Indian Engineering Services remains the most desired career for every engineering graduate in India. Engineering Services Examination is commonly known as ESE. This exam is conducted by UPSC every year to recruit engineers in four domains namely Civil, Electrical, Mechanical, Electronics & Telecommunications for the techno-managerial posts. The examination selection is based on a two-stage written examination followed by an interview. ESE is considered one of the most difficult exams in India. For IES candidates, it is important to be familiar with the UPSC IES Syllabus and Exam Pattern to be qualified for the most dignified posts. Below are the details provided to know UPSC IES Exam Pattern and Syllabus 2023.

UPSC IES Exam Pattern 2023: Key Highlights



Exam Name

Indian Engineering Services or Engineering Services Exam 

Conducting body

Union Public Service Commission (UPSC)

Exam Level


Exam mode


Selection process




Number of papers

Prelims – (2 Papers)

Mains – (2 Papers)

Total Marks

Prelims – 500

Mains – 600

Interview – 200

UPSC IES Prelims Exam Pattern 2023

UPSC IES Prelims exam is a pen and paper-based test which will be conducted in offline mode. There will be two papers in the Prelims exam with multiple-choice questions. Candidates are provided OMR sheets for both papers, wherein the correct answer needs to be coloured. 

For each wrong response, one-third mark will be deducted.

PapersNumber of questionsExam DurationMaximum Marks
Paper 1 (General Studies & Engineering Aptitude)1002 hours200
Paper 2 (Engineering Discipline)1503 hours300
Total250 Questions5 hours500 Maks

UPSC IES Mains Exam Pattern 2023

UPSC IES Mains Exam 2023 is a written examination in online mode with two papers. Both the papers will consist of questions from the opted Engineering discipline (Civil Engineering/ Mechanical Engineering/ Electrical/ Electronics & Telecommunication Engineering). Candidates will have to attempt the 5 questions out of the 8 questions in the English language. There will be no negative marking in this exam. In case of illegible handwriting, 5% of the marks may be deducted.

Mains papersNumber of questionsExam durationMaximum Marks
Paper 1 (Engineering Discipline)8 questions (5 will be chosen)3 hours300
Paper 2 (Engineering Discipline)8 questions (5 will be chosen)3 hours300
Total10 questions6 hours600 Marks

UPSC IES Interview Exam Pattern 2023

Only qualified applicants for the written exams are called for the Interview round for 200 marks.

A candidate should have the skills such as suitability for the public service sector career, mental calibre, leadership quality, initiative & intellectual curiosity, social traits and current affairs.

UPSC IES Exam Syllabus 2023

The UPSC IES Prelims and Mains syllabus are the same, but the difficulty level may differ. Candidates can also download UPSC IES Syllabus PDF from its official website. Here a brief introduction to the UPSC IES syllabus is provided below.



General Studies & Engineering Aptitude

Current issues of national and international importance relating to economic, social, and industrial development

Engineering Aptitude covering Logical reasoning and Analytical ability, Drawing, Importance of Safety, Standards and Quality practices in production, construction, maintenance, and services, Engineering Mathematics and Numerical Analysis, General Principles of Design, Basics of Energy and Environment: Conservation, environmental pollution, and degradation, Climate Change, Information and Communication Technologies (ICT) based tools and their applications in Engineering such as networking, Environmental impact assessment, Basics of Project Management, Basics of Material Science and Engineering, e-governance, and technology-based education, Ethics, and values in the Engineering profession.

Mechanical Engineering

Fluids Mechanics, Thermodynamics and Heat transfer, IC Engines, Refrigeration, and Air conditioning, Turbo Machinery, Power Plant Engineering, Renewal Sources of Energy, Engineering Mechanics, Engineering Materials, Mechanisms and Machines, Design of Machine Elements, Manufacturing, Industrial and Maintenance Engineering, Mechatronics and Robotics.

Civil Engineering

Flow of fluids, hydraulics machines and hydropower, Building Materials, Solid Mechanics, Structural Analysis, Design of steel structure, concrete and masonry structures, construction practice, planning and management, Hydrology and water resources engineering, Environmental Engineering, Geotechnical and Foundation Engineering, Surveying and Geology, Transportation Engineering.

Electronics and Telecommunication Engineering

Network Theory, Analog, and Digital Circuits, Analog and Digital Communication Systems, Basic Electronics Engineering, Basic Electrical Engineering, Material Science, Electronic Measurements and Instrumentation, Control Systems, Computer Organization, and Architecture, Electro Magnetics, Advanced Electronics topics, Advanced communication topics.

Electrical Engineering

Electrical and Electronic Measurements, Computer Fundamentals, Basic Electronics Engineering, Engineering Mathematics, Electrical Materials, Electric Circuits and Fields, Analog, and Digital Electronics, Systems and Signal Processing, Control Systems, Electrical Machines, Power Systems, Power Systems, Power Electronics, and Drives.

UPSC IES Exam Pattern and Syllabus 2023 FAQs

How many stages are there for UPSC IES Exam 2023?

There are three stages in the UPSC ESE (IES) selection process – Preliminary exam, Main exam, and Interview round.

What will the UPSC IES 2023 Prelims Exam duration be?

The exam duration for UPSC IES Prelims Exam will be 5 hours combined for two papers.

How many questions will be there for UPSC IES Prelims Paper 1 (General Studies & Engineering

There will be a total of 100 multiple choice questions for UPSC IES Prelims Paper 1 (General Studies & Engineering Aptitude).

How many marks are there for the UPSC IES 2023 Interview round?

The UPSC IES 2023 Interview round will be held for 200 marks.

How many domains are there for which the UPSC IES exam is conducted?

UPSC IES is conducted every year to recruit engineers in four domains namely Civil, Electrical, Mechanical, Electronics & Telecommunications.