Buyers beware. I purchased the N54 Turbo Overhaul Kit from BimmerWorld, which included a pair of OEM Mitsubishi N54 turbos and a complete install kit. Before ordering, I chatted with their support team to compare it with a competitor offering a lifetime warranty. The BimmerWorld rep assured me they offered a 2-year warranty, which gave me peace of mind to spend nearly $2,000 with them. That assurance was a key reason I chose BimmerWorld over the competition.
The turbos were installed on a 2011 BMW 335is running the factory tune, no mods, and everything was installed by the book. Only 4,000 miles later, the rear turbo seal failed.
I went back to BimmerWorld’s website, which clearly says the kit is covered by a 2-year warranty, like most items on their site. However, there’s no fine print or explanation of what’s actually covered—just vague marketing language. I submitted the turbos for replacement expecting a straightforward process.
That’s when I learned the warranty wasn’t actually BimmerWorld’s—it’s Mitsubishi’s manufacturer warranty, and BimmerWorld takes zero ownership. This is red flag #1 and feels like a bait-and-switch.
I paid $70 out of pocket to ship the failed turbo to Mitsubishi. Weeks later, the warranty claim was denied. Their reason? “Improper heat cycles OR excessive exhaust temps”—two completely vague and non-verifiable excuses that conveniently aren’t covered. That’s red flag #2. If you can’t even tell what caused the failure but still deny the claim, how is that a valid process?
I called BimmerWorld to try to get clarity or help. Instead of owning any part of the experience or trying to make it right, they pointed fingers at Mitsubishi and even tried to suggest my car might be modified or tuned, which it absolutely is not. I was passed between people, and nobody took responsibility.
So now I’m out $1,750 for the kit, $70 in shipping, plus install and removal costs—all for turbos that failed under normal use and a warranty that apparently doesn’t cover anything.
This is not how you treat loyal enthusiasts or customers. I will never shop at BimmerWorld again and wouldn’t recommend them to anyone. Do your homework—a “warranty” means nothing if the company offering it won’t stand behind it.
EDIT BimmerWorld’s reply highlights the real problem: the warranty was presented as a “2-year warranty” from BimmerWorld at the point of sale. Only after failure did I learn it was solely Mitsubishi’s manufacturer warranty, with BimmerWorld disclaiming responsibility. This distinction matters. Under the Magnuson-Moss Warranty Act (15 U.S.C. § 2301 et seq.), any written warranty offered in connection with a consumer product must be disclosed clearly, conspicuously, and without misleading the buyer. Representing a warranty as if it is directly provided by the seller, while in fact it is a third-party manufacturer’s warranty, is misleading and can constitute a deceptive trade practice.
Further, the denial letter from Mitsubishi cited only vague language — “improper heat cycles or excessive exhaust temps.” These catch-all reasons are nearly impossible for a consumer to disprove and essentially give the manufacturer unlimited discretion to deny coverage. That kind of vague exclusion is exactly what the FTC has warned against in its guidance on deceptive warranty practices.
A turbocharger seal failure at 4,000 miles on a stock, professionally installed car should reasonably fall under warranty. The issue is not just Mitsubishi’s denial, but that BimmerWorld used the appearance of a warranty they do not administer to secure the sale, while avoiding accountability afterward. In legal terms, this borders on a misrepresentation of warranty coverage.
A warranty is only as meaningful as the company standing behind it. In this case, the way it was marketed versus the reality of how it was handled shows a disconnect that is unfair to the consumer and inconsistent with the principles of U.S....
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