If your 2020 Mercedes-AMG E 63 keeps returning to the dealer for the same issues, you’re not alone. California’s Lemon Law exists to protect buyers and lessees when a high-performance car doesn’t perform as promised under warranty. Here’s what to know—and how to get started the right way—so you can make informed decisions and move forward with confidence.
Is Your 2020 Mercedes-AMG E 63 a Lemon in California?
The 2020 Mercedes-AMG E 63 is engineered for precision and power, but recurring defects can turn that experience into frustration. Owners report issues like harsh or delayed shifting from the AMG SPEEDSHIFT transmission, check-engine lights tied to the 4.0L biturbo V8, drivetrain vibrations, brake squeal, electrical glitches (intermittent infotainment or camera failures), and suspension noises. One hiccup doesn’t make a lemon—but repeated problems that affect safety, use, or value might.
In California, a “lemon” generally means a vehicle with a warranty-covered defect that the manufacturer or its authorized dealer can’t fix after a reasonable number of repair attempts, or that spends significant time in the shop. The law often looks at whether there were two or more attempts for a serious safety defect, four or more for a non-safety defect, or 30+ total days out of service for repairs. Problems that substantially impair the car—like power loss, stalling, steering or brake issues, transmission failure, or recurring electrical faults—are common examples consumers point to.
Ask yourself: Are the same symptoms returning despite repairs? Has the car been at the dealership for weeks? Do warning lights keep reappearing? Was each visit under the factory warranty? If your E 63 is new, leased, or even used/CPO but still covered by a Mercedes or dealer warranty, California’s Song-Beverly Consumer Warranty Act may apply. You don’t need to diagnose the root cause—consistent, documented symptoms are what matter.
Get Started Right: California Lemon Law Basics
California’s Lemon Law (the Song-Beverly Consumer Warranty Act) requires manufacturers to stand behind their warranties. When a manufacturer can’t repair a substantial defect after a reasonable number of attempts, consumers may be entitled to remedies such as a repurchase (buyback), replacement, or a cash settlement to keep the vehicle. There’s a helpful “presumption” for problems that occur within the first 18 months or 18,000 miles, but claims can still be valid outside that window depending on the facts.
A strong lemon claim starts with strong documentation. Always take the car to an authorized Mercedes-Benz dealer while it’s under warranty. Describe symptoms in plain language (“transmission hesitates shifting from 2nd to 3rd under light throttle,” “dashboard goes black intermittently,” “vehicle pulls left at highway speeds”). Don’t clear codes or disconnect the battery before service, and bring videos or photos if the issue is intermittent. Each visit, ask for a printed repair order showing dates, mileage in/out, your complaint, the technician’s findings, parts/labor, and whether the repair was covered under warranty.
There are practical considerations to keep in mind. Some manufacturers offer informal arbitration (Mercedes-Benz commonly uses BBB AUTO LINE), which can be quicker but isn’t always required before filing a lawsuit. California generally has a four-year statute of limitations measured from when the claim accrues. If there’s a buyback, the law allows a mileage offset for use before the first repair attempt. Aftermarket modifications can complicate things, so keep receipts and note what was installed and when. If the process feels overwhelming, a consultation can help you understand your options before you take the next step.
This article is for general informational purposes only, is not legal advice, and reading it does not create an attorney–client relationship. Every situation is different; you should obtain advice tailored to your facts. If you believe your 2020 Mercedes-AMG E 63 may qualify as a lemon, contact ZapLemon for a free, no-obligation consultation at (844) 927-5366 or visit https://zaplemon.com. We’re here to review your documents, answer your questions, and help you understand your options under California law.