Quick answer: Most people lose IELTS Writing marks not because their English is weak but because of a handful of avoidable habits - not answering the exact question, memorising templates, stuffing in linkers, reaching for "big" words, and running out of time to check. Below are the 12 most common mistakes, each mapped to the marking criterion it costs (Task Response, Coherence & Cohesion, Lexical Resource, or Grammatical Range & Accuracy) and a fix you can apply immediately.
Not sure which mistakes are costing you most? The free band-score estimator helps you see where you stand.
1. Not answering the exact question (Task Response)
Writing about the general topic instead of the specific question is the single most expensive error. A rehearsed essay that ignores the wording in front of you caps Task Response. Fix: read the prompt twice, underline the keywords and the instruction, and check your plan actually answers that question.
2. Writing under the word count (Task Response)
Under-length answers - below 250 words for Task 2 or 150 for Task 1 - are penalised, and short answers rarely develop ideas fully. Fix: practise until you know what your 270-word essay looks like on the page or screen, so you never have to count.
3. Sitting on the fence (Task Response)
Discussing both sides without ever committing to a position leaves your Task Response and Coherence weaker than they should be. Fix: decide your opinion before you write, state it in the introduction, and restate it in the conclusion.
4. Memorised templates and phrases (Coherence & Lexical Resource)
Examiners recognise "In this modern era of globalisation…" openers and pre-learned sentences, and they add nothing. Padded, meaningless phrases hurt more than they help. Fix: write in your own words, responding to the actual prompt.
5. Overusing linking words (Coherence & Cohesion)
Dropping "Firstly, Moreover, Furthermore, In addition" into every sentence signals mechanical writing and lowers Coherence. Fix: use linkers only where the logic genuinely needs one, and rely on clear topic sentences and referencing words ("this", "such") to connect ideas.
6. Weak or missing paragraphing (Coherence & Cohesion)
One giant block of text, or a scatter of tiny paragraphs, both hurt organisation. Fix: use the four-paragraph shape - introduction, two body paragraphs (one idea each), conclusion - and start each body paragraph with a clear topic sentence.
7. Reaching for "impressive" vocabulary (Lexical Resource)
Vocabulary is scored on accuracy and appropriacy, not rarity. A misused grand word costs more than a plain correct one. Fix: choose the precise everyday word and learn reliable collocations rather than memorising obscure synonyms.
8. Repeating the same words (Lexical Resource)
Repeating "important", "people" or the exact question wording throughout signals a narrow range. Fix: paraphrase naturally and keep a small bank of alternatives you can use correctly - never a synonym you are unsure of.
9. Long sentences that lose control (Grammatical Range & Accuracy)
Trying to sound advanced with a 40-word sentence often produces errors that force the examiner to re-read. Fix: mix simple and complex sentences, and if a sentence is getting tangled, split it in two. A clear short sentence always beats a broken long one.
10. Frequent small grammar slips (Grammatical Range & Accuracy)
Articles ("a"/"the"), subject–verb agreement, and tense slips are the errors that most often hold a writer at band 6. Fix: learn your personal top three error types and check specifically for them at the end.
11. Informal tone or contractions (Lexical Resource)
Slang, contractions ("don't", "can't") and chatty asides are out of place in the Task 2 essay and Academic Task 1. Fix: keep the tone formal and objective; you can still use "I" to give your opinion.
12. Leaving no time to check (all criteria)
Writing until the final second means obvious, correctable slips stay in your script. Fix: reserve the last two to three minutes to catch spelling, tense and article errors - some of the easiest marks to recover.
How to stop repeating your own mistakes
Reading a list of mistakes is easy; spotting your own in the moment is hard. The reliable method is to write a timed answer, get it checked against the four criteria, and note the single error you make most often - then target only that in your next piece.
- Write one timed answer under real conditions (40 minutes for Task 2).
- Mark it against the four criteria - Task Response, Coherence & Cohesion, Lexical Resource, Grammatical Range & Accuracy - or have it marked for you.
- Find your most frequent error and write it at the top of the page.
- Target only that error in your next essay, ignoring everything else.
- Repeat weekly. Fixing one recurring error at a time is what moves a band, not writing more essays with the same faults.
The fastest way to identify your recurring error is a tutor's read on a real essay. See GE's IELTS Writing Feedback service, or first test your timing with the free IELTS practice test.
Frequently asked questions
Why is my IELTS Writing score lower than I expected?
Usually because of consistency rather than ability: repeated small errors, an unclear position, or not fully answering the question. The four criteria are averaged, so one weak area - often Task Response or grammatical accuracy - can pull the whole band down.What is the most common IELTS Writing mistake?
Not answering the exact question. Writing about the general topic instead of the specific prompt caps Task Response no matter how good your English is, so read the question twice and underline exactly what it asks.Do linking words improve my score?
Only when used naturally. Cohesive devices help Coherence when the logic needs them, but stuffing in "Firstly, Moreover, Furthermore" mechanically actually lowers the score. Clear topic sentences do more work than a pile of connectors.Should I use advanced vocabulary to get a higher band?
No - Lexical Resource rewards precision and accuracy, not rare words. A common word used correctly beats an impressive one used wrongly. Focus on strong, accurate collocations instead of memorised obscure synonyms.How can I stop making the same mistakes?
Write timed answers, get them marked against the four criteria, and fix one recurring error at a time. Writing more essays without feedback simply cements the same errors, so targeted correction is far more effective than volume.Is it worth having my essays checked by a tutor?
For most people, yes. You cannot easily see your own repeated errors, and the official result gives no per-criterion breakdown. A tutor's feedback tells you precisely which of the four criteria is costing you marks, which is the quickest route to a higher band.For the method behind a strong essay, see How to Write an IELTS Task 2 Essay and the pillar, IELTS Writing: How to Structure Essays and Improve Your Band Score. If your goal beyond IELTS is to teach English abroad, an accredited TEFL course is the usual next step.
All examples in this article are original writing for GE and do not reproduce any real exam material.