Failed Bachelor's Thesis: ChatGPT, Reasons & What's Next in 2026

Bachelorarbeit durchgefallen: ChatGPT, Gründe & was dann 2026
Marie – Studienberatung
Author of this post
Marie – Exam Crisis Expert
Marie has been advising students in critical exam situations for years and knows all options after failed final theses.

Bachelor's thesis failed - for many, the absolute worst-case scenario. Months of work, countless nights in front of the laptop, and then the devastating "failed" grade. The first reaction: panic. The second question: What now?

The good news: a failed bachelor's thesis is not the end of the world. In most cases, there's a second attempt, and many students pass easily on their second try. This article explains the most common reasons for failing, your options for a second attempt, and how to do better next time.

Key Takeaways

  • 5-10% of all bachelor's theses fail - you are not alone
  • A second attempt is almost always possible with a new topic
  • ChatGPT use is detected and leads to failure
  • Most common reasons: plagiarism, formal errors, lack of original contribution
  • Failing twice can lead to exmatriculation and a nationwide ban

Bachelor's thesis failed - how common is it?

Approximately 5-10% of all bachelor's theses fail. At some universities and especially at distance learning universities like IU or FOM, the rate is sometimes higher. This means that every year, dozens of students fail their final thesis - you are definitely not alone.

Failure rates by university type:
Public universities: 5-8% | Distance learning universities (IU, IUBH, FOM): 8-12% | Private universities: 4-7%. The higher rate at distance learning universities is due to less intensive supervision and a higher proportion of self-study.

Important to know: a failed bachelor's thesis is not a career killer. Employers are only interested in your degree and your final grade - not how many times you had to repeat your thesis.

The most common reasons for failing

1. Plagiarism - even unconscious

The classic: too much copy-paste without proper citation. Modern plagiarism software like Turnitin detects even the smallest text borrowings. Even "rephrasing" is often detected if the structure of the source is maintained.

Plagiarism trap:
Even forgotten quotation marks can be considered plagiarism. If you copy a sentence 1:1 and forget to cite the source, it is considered an attempt to deceive - even if you didn't do it intentionally.

2. ChatGPT and AI generation

Bachelor's thesis failed due to ChatGPT - this now affects one in ten failures. Universities use special AI detectors (GPTZero, Copyleaks) and trained examiners recognize typical AI formulations.

Typical AI characteristics: generic phrases, lack of depth, overly perfect grammar for weak students, inappropriate examples. Those who use ChatGPT for entire chapters almost always get caught.

AI usage = attempt to deceive:
In cases of proven ChatGPT usage, the work is not only graded "failed" - it can also lead to deception proceedings with possible exmatriculation. Most examination regulations explicitly prohibit AI-generated texts.

3. Formal errors and disregard for guidelines

  • Too many/few pages: More than 10% deviation often leads to failure
  • Incorrect citation style: Switching between APA, Harvard, Chicago
  • Missing elements: Abstract, declaration of originality, appendices forgotten
  • Formal deficiencies: Inconsistent formatting, missing page numbers

4. Lack of scientific quality

The work is formally correct but weak in content: no independent research question, superficial literature review, missing methodology, no clear argumentation. Many fail because they submit an "extended term paper" instead of genuine research.

5. Botched defense

In some degree programs, the oral defense accounts for up to 30% of the overall grade. Those who cannot explain their own work or have no answers to critical questions can fail despite a good written paper.

Bachelor's thesis at risk?

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Bachelor's thesis failed - what then?

After the first failure, you usually have a second attempt. The rules of the game:

New topic

You must choose a completely new topic. The old work cannot be "improved". Some universities allow a related topic, others require a completely new research question.

Deadline 3-6 months

The processing time for the second attempt is usually 3-6 months from the announcement of the result. You must actively contact the examination office and register.

Intensive supervision

Most supervisors take the second attempt more seriously and offer closer guidance. Use it! Regular meetings minimize the risk of failing again.

Process after failing

  1. Review report: Request the written evaluation and carefully analyze the criticisms
  2. Consultation: Talk to your supervisor about the reasons and what needs to be different for the second attempt
  3. Inform the examination office: Clarify deadlines, registration procedures, and formal requirements
  4. Choose a new topic: This time, choose a clearer, better delimited topic
  5. Work more structured: Create a detailed timetable with milestones

Special cases: IU, FOM, HFH

IU/IUBH Bachelor's thesis failed

At IU (International University, formerly IUBH), there is special support for the second attempt: intensive online supervision, interim feedback after each chapter, and access to writing workshops. IU has recognized that distance learners need special support and offers significantly more support for the second attempt.

FOM Bachelor's thesis failed

FOM (University of Economics & Management) has strict formal requirements. Many fail due to formatting errors or non-compliance with FOM-specific citation rules. For the second attempt: meticulously follow the FOM guidelines!

HFH Bachelor's thesis failed

HFH (Hamburger Fern-Hochschule) usually allows 6 months of processing time for the second attempt. Important: HFH often has long correction times, so factor that into your schedule.

Failed twice - what then?

Failing for the second time can lead to forced exmatriculation. You can no longer study this subject at any German university - a nationwide ban.

Nationwide ban after failing twice:
After definitively failing your bachelor's thesis, you are banned from this degree program at all German universities. Switching to another university will not help. The only option: study a completely different subject.

Options after definitive failure

  • Different subject: You can start a completely different course of study from scratch
  • Abroad: You can often continue studying abroad, but the degree may not be recognized in Germany
  • Apprenticeship: A vocational training is often the most pragmatic way
  • Career entry: With 90% of your degree, you can often find good jobs as a career changer

You can find more about your options after academic failure in our guide to dropping out of university and alternatives.

Successfully master the second attempt

Discreet support can make all the difference

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Bachelor's thesis second attempt: How to succeed this time

Success strategies for the second attempt:
  • Choose a clearer, better delimited topic
  • Weekly coordination with supervisor instead of monologues
  • Professional editing before submission (not just spelling!)
  • Use plagiarism software yourself before submitting
  • Plan buffer time - rather finish 2 weeks before the deadline
  • Organize peer review with fellow students

Typical mistakes in the second attempt

Many make the same mistakes in the second attempt: starting too late, too little communication with the supervisor, repeating old mistakes. Those who ignore the report from the first attempt often fail again.

Critical mistake:
Trying the same topic with minor changes in the second attempt. This is almost always rejected! You MUST choose a substantially new topic.

Can you appeal?

Yes, you can appeal the grading of your bachelor's thesis. However, the chances of success are low, as scientific evaluations have a lot of discretion.

When is an appeal worthwhile?

  • Formal errors: Examiner violated examination regulations
  • Unequal treatment: Other works with the same errors were graded better
  • Arbitrariness: Grading is not comprehensibly justified
  • Bias: Personal conflict with examiner

In cases of allegations of deception (plagiarism, ChatGPT), legal assistance is often useful, as exmatriculation is also a threat here.

Conclusion: A failed bachelor's thesis is not the end of the world

The most important takeaways:
  • 5-10% fail - you are not alone
  • A second attempt is almost always possible
  • ChatGPT use is detected and leads to failure
  • Main reasons: plagiarism, formal errors, lack of original contribution
  • Failing twice: Nationwide ban for this subject
  • Approach the second attempt with a new strategy!

A failed bachelor's thesis feels catastrophic - but it's usually just a detour, not a dead end. Most students pass on their second attempt because they learn from their mistakes and proceed more structured this time.

"Failure is only a mistake if you learn nothing from it. With the second attempt, you have the chance to do better."