2018 Porsche Cayenne Problems and Top Complaints – Is Your Car A Lemon?

Electrical and engine issues among the top complaints received by the NHTSA from vehicle owners

Updated on Author: Brian Jones

Updated on Author: Brian Jones

The 2018 Porsche Cayenne is one of the more expensive luxury SUVs on the market. The automaker claims that the newest lineup creates “more butterflies in more stomachs,” but that queasy feeling is probably just related to the money spent on this lemon. This high-end model features a defective engine and a malfunctioning electrical system.

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NHTSA Complaints for the 2018 Porsche Cayenne

Complaint CategoryNumber of Complaints
Unknown Or Other
Electrical System
Exterior Lighting
Forward Collision Avoidance: Adaptive Cruise Control
Fuel/propulsion System

Problems with the Engine

When it comes to having an engine under the hood of a luxury SUV, there can be no shortcuts taken, but that’s precisely what Porsche did.

Just read this NHTSA review. “Intermittent lack of acceleration when taking left turns from a dead stop. Car was a dealer loaner with 9,000 miles on speedometer. I purchased the car in August, 2018. Within the first 1000 miles and in less than four weeks, I experienced a serious lack of acceleration on two occasions when making a left turn. I reported this to the dealer and was advised that it was probably driver error caused by operating the brake and accelerator using both feet. I do not drive an automatic car using two feet. Also, I was told by the dealer they checked with Porsche and there are records of this type of event. I checked on the internet and there are numerous identical complaints dating back several years.”

To further prove that this Porsche engine isn’t worth the cost, look at Service Bulletin #122-W5C2W-08. This communication states that the engine might start knocking, requiring the carbon deposits to be cleaned out. These concerns are not something that should be occurring on a newer SUV at this price point. Furthermore, it’s not the type of Porsche engine that can create butterflies. It’s certainly a far cry from the engines used in the company’s high-performance models. The only butterflies being experienced by owners are those occurring after regretting the purchase.

Problems with the Electrical System

When looking at the cabin of the Porsche Cayenne, it’s expected that all of the innovative technologies are going to work as designed, but that’s not the case either.

Read this Edmunds review. “Another disappointment was when using Apple CarPlay, the controls on the steering wheel for skipping to the next song (if you configure the spare button for that) do not work.  Neither does making phone calls – you have to use Apple CarPlay via the touch screen unless you unplug the iPhone and it falls back to Bluetooth.”

While all of these problems are inconvenient and make the drive uncomfortable, there’s a larger issue at hand. Service Bulletin #122-C3T2Z-08 discusses how a Cayenne can display multiple fault codes if it isn’t driven regularly or for long enough. To clear these fault codes, a trained technician will need to get involved. So, for owners that simply want to keep this Cayenne as a second vehicle, or leave it at a vacation home, they will have to make a trip to the dealership after letting the vehicle sit. At this point, owners will likely have experienced too many “butterflies” and will choose a different luxury brand to do business with instead.

Your Lemon Law Legal Rights

Think you have a lemon? Sit back and let the experts work out your lemon case at no cost to you. The law makes Porsche pay legal fees. You may be able to get your lemon out of your life. Every year, auto manufacturers buy back, replace or pay cash settlements to thousands of ‘lemon’ owners like you.

Who are we? We are Lemberg Law, a Consumer Law Firm

Lemberg Law is a consumer law firm helping victims of bad manufacturing and run-arounds from auto companies. We are ranked A+ by the BBB. Call our Helpline today!  There is no charge unless we win.


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Brian Jones

About the Author:

Brian Jones spent more than 30 years working as an ASE Certified Master Tech and Parts Specialist at multiple dealerships. Brian has become an authority in the industry, traveling across the country to consult for car dealerships and contributing his expertise as a writer for several major automotive publications. In his spare time, Brian enjoys working on pickup trucks, muscle cars, Jeeps and anything related to motorsports.

See more posts from Brian Jones

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