Most common 2005 Porsche Boxster problems
Share of the 18 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Porsche Boxster complaints by model year
Best Boxster years: 2014, 2000, 2006. Years to avoid: 2005, 1998, 1999, 1997. Compare all years →
What 2005 Porsche Boxster owners say
Engine & cooling
While I was driving on a city street at about 30 MPH, my 2005 Boxster started making a rattling noise, then completely died in the middle of an intersection on a city street without any prior warning. At the same time, all of the warning lights came on. I was able to put the car in neutral and coast to the side of the road. Car was towed to my mechanic, who states it is an intermediate shaft bearing issue/failure. Had I been driving on the freeway at high speed, I most likely would have been killed. I am the original owner of the car, it has 128,000 miles and recommended maintenance is all up to date.
Tl* the contact owns a 2005 Porsche Boxster. The contact stated while traveling approximately 55 MPH, the engine made a loud noise, various warning lamps illuminated on the instrument panel and the vehicle stalled. The vehicle was towed to an independent mechanic. The technician diagnosed that the motor needed to be replaced. The independent mechanic suggested that the vehicle be taken to an authorized Porsche dealer for repairs. The vehicle was towed to an authorized dealer who verified the failure and stated that the motor had self destructed and needed to be replaced. The vehicle was to be inspected and repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 34,000. Updated 8/12/14 updated 8/23/2017
Transmission & drivetrain
Tl* the contact owns a 2005 Porsche Boxster. The contact was unable to drive the vehicle because the ignition key was locked inside the ignition. The contact took the vehicle to a certified mechanic who diagnosed that the transmission failed and needed a cable adjustment with the transmission and the key. The contact stated that the failure was directly related to NHTSA campaign number: 03V004000 (power train); however, the vehicle was not included in the recall. The manufacturer was made aware of the failure. The approximate failure mileage was 47,000.
This is a very well know ims failure issue with Porsche Boxster which certainly calls for a recall from Porsche. My 2005 engine will need to be replaced for 20K just because of the very obvious design flaw Porsche has in its m96 engines. I am pretty sure there have been numerous complaints about this in past but nobody has ever heeded to it. I sincerely recommend some one to please look into and ask Porsche to accept and recall m96 engines failing due to ims. Any car expert or mechanic or dealership can vouch for the design flaw Porsche has. Its potentially fatal too. I sincerely request someone to look into this complaint with uttermost sincerity.
2005 Porsche Boxster engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.7L 6-cyl | 5-speed manual | RWD | 18 / 27 / 21 |
| 2.7L 6-cyl | 6-speed manual | RWD | 18 / 26 / 21 |
| 3.2L 6-cyl | 6-speed manual | RWD | 17 / 25 / 20 |
| 2.7L 6-cyl | 5-speed automatic | RWD | 16 / 24 / 19 |
| 3.2L 6-cyl | 5-speed automatic | RWD | 16 / 24 / 19 |
EPA ratings. Class: Sports car.
Frequently asked questions
Is the 2005 Porsche Boxster a good car?
Based on 18 owner complaints filed with NHTSA, the 2005 Boxster rates use caution: 2.0× as many complaints as a typical year of the Boxster at the same age. It is one of the Boxster years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2005 Porsche Boxster?
The engine & cooling — 12 complaints, 67% of all complaints for this model year, most often about engine. Next are the transmission & drivetrain (3) and air bags (2).
How many recalls does the 2005 Porsche Boxster have?
NHTSA lists no recalls for the 2005 Porsche Boxster. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Porsche Boxster?
The best years by complaints, compared at the same age, are 2014, 2000 and 2006. Years to avoid or approach with caution: 2005, 1998, 1999 and 1997. See the full Porsche Boxster years comparison.
At what mileage do 2005 Porsche Boxster problems happen?
The median mileage reported in complaints is about 38,000 miles; 71% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.