This review is to express my deep dissatisfaction and frustration with the service I received at Marshall Mercedes Benz dealer Portsmouth . I recently brought my car in for a service due to an auxiliary battery malfunction and the EML light being on. Unfortunately, my experience has been extremely disappointing and has caused me significant stress and financial burden.To begin with, I was charged £192 solely for the diagnosis of the issue, despite initially informing their team that I only wanted to change the auxiliary battery. I reluctantly paid this fee, only to be informed later that further diagnosis was required, which would incur an additional charge of £290 for further diagnosis regarding EML issue. In total, I ended up paying nearly £500 for diagnosis alone.Furthermore, after the diagnosis, I was informed that there was a problem with a sensor, and I would need to pay an additional £1000 to have it replaced. Reluctantly, I agreed to the repair and collected my car after three days. However, much to my dismay, the very next day, the EML light reappeared. It is disheartening to realize that all the diagnostics and repairs for which I paid such a substantial amount were incorrect.Upon contacting Marshall dealership, I was asked to bring my car back for further assessment and repair. I obliged and left my vehicle with them for seven days. During this time, I had to rely on expensive taxi services to commute and transport my child to and from nursery. I had hoped that this prolonged period of repair would result in a permanent resolution to the issue. However, when I collected my car, I discovered that it had only undergone a DPF cleaning, a process that typically takes a few hours. I fail to understand why my car was kept for an entire week for such a straightforward procedure.Regrettably, my disappointment reached its peak when, just five minutes into driving my car home, the EML light appeared once again. This ongoing problem has caused me immense emotional conflict and distress. I find it unacceptable that after multiple attempts and considerable expenses, my car remains in an unsatisfactory condition.All this misdiagnosis and inadequate repairs made me deeply saddened and i am sorry to say i never experienced such an unprofessional bad experience from any other establishmentCar registration FH17 FDA
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