Ranking
#44
in Automotive
NPS Score
-100
Recommended: Unlikely
Jun '25 - May '26
Used this business recently? Share your experience to help others decide.
Used this business recently? Share your experience to help others decide.
Share Your Experience1 reviews | Active since Jan 2020
<div>Unprofessional Experience and ***** I had an extremely disappointing encounter with DIENER’S AUTO. From the beginning, I observed a lack of professionalism—appointments were not honoured, and communication was consistently poor. I initially sent my vehicle to DIENER’S AUTO to address a water leak. The car was returned without any repairs and with a note stating, “it was no leaking pipes.” However, the following day, the water leak persisted. As a safety precaution, I arranged for my car to be towed back to DIENER’S AUTO to prevent potential engine damage. During this visit, I also requested a regular service ahead of schedule due to the ongoing issue. Two weeks later, I received my car back. On the very first day of driving, multiple issues became apparent: oil was splattered throughout the engine compartment, inside the radiator, and water tanks. Upon further investigation, I discovered that many parts allegedly “replaced” were, in fact, still the originals. The engine oil had not been changed, and the gearbox oil had not been checked—despite being charged for these services. This behaviour is not only unprofessional but also constitutes blatant *****. When I confronted the owner of DIENER’S AUTO, about the unchanged parts, he admitted in a recorded conversation that the parts were never changed. He stated that I should not pay him for the service and promised to rectify the situation himself, including covering the costs for parts and labour. In the weeks that followed, I was informed that the head gasket was now damaged. All of these events occurred between the last day of February and mid-August, during which my vehicle was repeatedly returned to DIENER’S AUTO and remained largely unusable. Eventually, I took my vehicle to an independent mechanic for a thorough assessment. The report indicated that the engine damage was the result of an unfixed water-cooling system—the very issue for which I had initially sought DIENER’S AUTO’s help. Additionally, the oil sump tray had been damaged, and a new bolt and nut had been welded inside the tray, necessitating replacement. I strongly advise others to exercise extreme caution before considering DIENER’S AUTO for any repair work. It is critical to seek a second opinion and to request detailed, transparent invoices for all services performed. My experience resulted in a financial loss of nearly R 200,000.00 and unresolved vehicle issues. I attempted to arrange a meeting with Diener Wilhelm, but after three weeks of repeated cancellations, his lawyer contacted me. Diener subsequently withdrew from these meetings and threatened legal action if any negative information was posted about him. Based on my experience, I cannot recommend DIENER’S AUTO. I strongly urge potential customers to seek honest and professional service elsewhere.</div>
1 reviews | Active since Jan 2020
<div>Unprofessional Experience and ***** I had an extremely disappointing encounter with DIENER’S AUTO. From the beginning, I observed a lack of professionalism—appointments were not honoured, and communication was consistently poor. I initially sent my vehicle to DIENER’S AUTO to address a water leak. The car was returned without any repairs and with a note stating, “it was no leaking pipes.” However, the following day, the water leak persisted. As a safety precaution, I arranged for my car to be towed back to DIENER’S AUTO to prevent potential engine damage. During this visit, I also requested a regular service ahead of schedule due to the ongoing issue. Two weeks later, I received my car back. On the very first day of driving, multiple issues became apparent: oil was splattered throughout the engine compartment, inside the radiator, and water tanks. Upon further investigation, I discovered that many parts allegedly “replaced” were, in fact, still the originals. The engine oil had not been changed, and the gearbox oil had not been checked—despite being charged for these services. This behaviour is not only unprofessional but also constitutes blatant *****. When I confronted the owner of DIENER’S AUTO, about the unchanged parts, he admitted in a recorded conversation that the parts were never changed. He stated that I should not pay him for the service and promised to rectify the situation himself, including covering the costs for parts and labour. In the weeks that followed, I was informed that the head gasket was now damaged. All of these events occurred between the last day of February and mid-August, during which my vehicle was repeatedly returned to DIENER’S AUTO and remained largely unusable. Eventually, I took my vehicle to an independent mechanic for a thorough assessment. The report indicated that the engine damage was the result of an unfixed water-cooling system—the very issue for which I had initially sought DIENER’S AUTO’s help. Additionally, the oil sump tray had been damaged, and a new bolt and nut had been welded inside the tray, necessitating replacement. I strongly advise others to exercise extreme caution before considering DIENER’S AUTO for any repair work. It is critical to seek a second opinion and to request detailed, transparent invoices for all services performed. My experience resulted in a financial loss of nearly R 200,000.00 and unresolved vehicle issues. I attempted to arrange a meeting with Diener Wilhelm, but after three weeks of repeated cancellations, his lawyer contacted me. Diener subsequently withdrew from these meetings and threatened legal action if any negative information was posted about him. Based on my experience, I cannot recommend DIENER’S AUTO. I strongly urge potential customers to seek honest and professional service elsewhere.</div>
1 reviews | Active since Jan 2020
Diener’s Auto in Mossel Bay is the place to go. Their knowledge and approach to mechanics is far above average, with dedicated technicians. So often auto workshops leave you with regret but this is one shop that is thorough all round. They are on the cutting edge with workshop management and customer feedback.
1 reviews | Active since Jan 2020
Diener’s Auto in Mossel Bay is the place to go. Their knowledge and approach to mechanics is far above average, with dedicated technicians. So often auto workshops leave you with regret but this is one shop that is thorough all round. They are on the cutting edge with workshop management and customer feedback.
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