UPSC ESE Mock Test 2027: Prelims and Mains Practice Guide
Full-length and sectional practice for GS and Engineering Aptitude, your discipline paper and Mains answer writing, set in the ESE 2027 pattern.
A UPSC ESE mock test is the closest you can get to the real Engineering Services Examination before exam day. The ESE 2027 Preliminary Examination on 31 January 2027 packs two objective papers, five hours of testing and negative marking into a single day, and the conventional Mains follows on 18 June 2027. Reading and solving chapter questions builds knowledge, but only timed tests show whether you can use it at exam speed.
This page explains which ESE mock tests to take, when to take them, how to analyse each attempt and which numbers to track so every test improves your next score.
ESE 2027 Pattern to Practise In
Paper | Questions | Marks | Time | What your mocks must train |
|---|---|---|---|---|
Prelims Paper I: General Studies and Engineering Aptitude | 100 | 200 | 2 hours | Breadth across all ten topics at 72 seconds a question |
Prelims Paper II: Engineering Discipline | 150 | 300 | 3 hours | Quick numericals without a calculator, at the same 72-second pace |
Mains Papers I and II: Engineering Discipline | Descriptive | 300 each | 3 hours each | Full working, labelled sketches and units, with a calculator |
Each Prelims question carries 2 marks, and about 0.67 marks is deducted for every wrong answer.
Types of ESE Mock Tests
Test type | What it covers | When to take it |
|---|---|---|
Topic-wise test | One chapter, usually 15 to 25 questions | Right after finishing the chapter |
Subject-wise test | A full subject, such as structural analysis or power systems | When the subject is complete |
GS sectional test | Paper I topics such as current issues, project management and ethics | Weekly from now until Prelims |
Full-length Prelims mock | Paper I and Paper II in their real time limits | The last 8 to 10 weeks before 31 January |
Conventional (Mains) test | Timed descriptive questions from your discipline syllabus | One or two a month now, weekly after Prelims |
How to Use ESE Mock Tests Before Prelims
October to November 2026: Take topic-wise and subject-wise tests as you finish chapters, plus one GS sectional test a week.
December 2026: Add one full-length Prelims mock a week. Sit both papers on the same day, with a real break between them.
January 2027: Move to two full-length mocks a week and spend the days in between on analysis and error-log revision.
February to June 2027: Shift to timed conventional papers for Mains, with at least one 3-hour paper a week.
How to Analyse an ESE Mock
Sort wrong answers by cause: Concept gap, calculation slip or misread question. Each one needs a different fix.
Find your negative-marking leak: Count wrong guesses. Three wrong answers cost as much as one correct answer earns.
Review skipped-but-solvable questions: These are marks you left behind through poor time use, not lack of knowledge.
Flag slow questions: Anything that took more than two minutes needs a faster method or a clear skip rule.
Benchmarks to Track
Track accuracy, attempts and score separately for Paper I and Paper II, and compare them across tests rather than against a single number. For context, the official ESE 2025 Prelims cut-off for the General category ranged from 176 out of 500 in Electronics and Telecommunication to 238 in Mechanical. Aim for a clear margin above the figure for your discipline, because Prelims marks also count towards your final rank. The ESE cut-off page lists every category.