IOCL Mechanical Officer (Grade A) 2026 Free Guess Paper

Indian Oil Corporation opened 470 executive posts in August 2026, and mechanical engineers hold the largest share of them. IOCL Mechanical Officer Grade A 2026 now draws candidates toward 118 mechanical seats under one fixed 150-minute test. A weak grasp of the eligibility rules or the cutoff structure can end a strong candidate’s chances before the interview stage even starts.

TL;DR

• IOCL lists 118 Grade A vacancies in Mechanical Engineering, the highest count among all disciplines.
• The application window ran from 14 August 2026 to 3 September 2026.
• The computer-based test falls on 24 September 2026 and carries 85 percent weight in the final score.
• A graduate engineer needs 65 percent marks (55 percent for SC, ST, and PwBD) and must meet the 26-year age limit.
• Each section of the test carries its own 40 percent cutoff, and the overall cutoff sits at 45 percent for general candidates.
• A Grade A officer starts near an 18.4 lakh rupee annual CTC.

IOCL Mechanical Officer Grade A 2026: Vacancy Break-Up

Indian Oil Corporation released Advertisement Number IOCL/CO-HR/RECTT/2026/01 on 14 August 2026 for 470 executive posts. The Mechanical stream carries the highest count among Graduate Engineer roles, with 118 Grade A seats. Around 49 of these seats sit in the general, unreserved quota, so competition inside that quota alone stays intense. The Diploma Engineer stream, Grade E0, adds 21 more mechanical seats for candidates who hold a three-year diploma instead of a degree.

IOCL Mechanical Engineer Eligibility Criteria 2026

A candidate for the Mechanical Grade A post needs a full-time B.E. or B.Tech in mechanical engineering, or in an allied stream such as mechanical design, production, or automation engineering. IOCL sets the minimum aggregate mark at 65 percent for General, EWS, and OBC-NCL candidates. SC, ST, and PwBD candidates need 55 percent. IOCL fixes the maximum age at 26 years as of 1 July 2026 for General and EWS candidates, and government norms extend this limit for reserved categories.

Diploma Engineer (Grade E0) Rules

The Diploma Engineer post accepts only a three-year diploma in mechanical engineering. IOCL does not treat allied diploma branches as eligible for this post. A candidate who already holds a B.E. or B.Tech does not qualify for the diploma post. The same 65/55 percent mark split applies here, along with the 26-year age limit.

IOCL Grade A Exam Pattern 2026

The computer-based test runs for 150 minutes and carries 100 questions worth 100 marks. Section A tests general aptitude, and it does not include general knowledge or current affairs questions. Section B tests the domain subject only, so a mechanical candidate answers questions from core mechanical topics such as thermodynamics, strength of materials, and machine design. IOCL deducts 0.25 mark for each wrong answer.

Sectional Cutoff and Qualifying Marks

IOCL applies a separate cutoff to each section, not only to the total score. A General category candidate must clear 40 percent in Section A and 40 percent in Section B, and must also reach 45 percent overall. A candidate who misses either sectional cutoff gets removed from the process, even with a strong overall score. This rule pushes a candidate to prepare both sections at the same level, instead of relying on one strong section to cover a weak one.

Group Discussion, Group Task, and Interview Weight

The computer-based test carries 85 percent weight in the final merit score. Group Discussion and Group Task together carry 5 percent, and the Personal Interview carries 10 percent. A candidate needs a minimum 40 percent score in the GD/GT stage and in the interview stage to stay in the process. Because the written test decides most of the final rank, a candidate should treat CBT preparation as the main task, not a formality before the interview.

A 30-Day Study Plan for the IOCL Mechanical Test

A candidate can split the 30 days before the exam into four blocks. Each block builds on the previous one, so a candidate should not skip ahead without finishing the earlier steps.

1. Days 1 to 7: Revise core subjects with the highest weight in past mechanical papers - thermodynamics, strength of materials, and fluid mechanics.
2. Days 8 to 15: Cover machine design, manufacturing processes, and industrial engineering. Add 20 minutes of daily aptitude practice alongside this block.
3. Days 16 to 23: Take full-length mock tests under the real 150-minute limit. Track the score in each section, not only the total score.
4. Days 24 to 30: Return to the weak topics from the mock test error log. Revise formula sheets, practice reasoning and English daily, and keep the final day free of new topics.

IOCL Grade A Salary and Career Value

A Mechanical Grade A officer starts at a basic pay of 50,000 rupees a month, inside the 50,000 to 1,60,000 pay scale. The approximate annual CTC for this grade reaches 18.4 lakh rupees, once IOCL adds dearness allowance, house rent allowance, and other components. A Diploma Engineer at Grade E0 starts near an 11.1 lakh rupee annual CTC. This pay gap gives a graduate engineer a clear reason to clear the higher eligibility bar for Grade A over Grade E0.

Application Fee and Service Bond

IOCL charges 1,000 rupees plus GST as the application fee for General, EWS, and OBC-NCL candidates. SC, ST, and PwBD candidates pay no fee. A selected Grade A officer signs a service bond of 3 lakh rupees for the General category, and 50,000 rupees for EWS, OBC-NCL, SC, ST, and PwBD candidates. This bond ties the officer to IOCL for a fixed service period, and IOCL states the exact term in the detailed notification.

Common Questions About IOCL Mechanical Officer 2026

What is the last date to apply for IOCL Grade A 2026? The application window closed on 3 September 2026 at 5:00 PM.

How many mechanical vacancies does IOCL Grade A 2026 carry? The notification lists 118 Mechanical Grade A vacancies, the highest count among all disciplines.

Does the IOCL Grade A exam include general knowledge questions? No. Section A tests quantitative aptitude, reasoning, and English. It does not include general knowledge or current affairs.

Is work experience mandatory for the Mechanical Grade A post? No. The Graduate Engineer post does not carry a mandatory work experience requirement.

What is the minimum qualifying percentage for IOCL Grade A eligibility? A General, EWS, or OBC-NCL candidate needs 65 percent marks in the qualifying degree. SC, ST, and PwBD candidates need 55 percent.

What This Means for IOCL Mechanical Officer 2026 Aspirants

IOCL Mechanical Officer Grade A 2026 gives a fresh graduate engineer a direct entry route, without a work experience filter. The sectional cutoff structure pushes a candidate away from a single-subject strategy, toward balanced preparation across aptitude and domain knowledge. A candidate who follows the 30-day plan, respects the negative marking rule, and builds a habit of full-length mock tests stands a stronger chance at the 45 percent overall cutoff and beyond it. The next signal to track is the release of the final CBT admit card and any change to the tentative exam date.