Problems · NHTSA complaints

2005 Porsche Boxster problems

Owners filed 19 complaints about the 2005 Porsche Boxster with NHTSA between May 2006 and Mar 2023. The most-cited component is engine and engine cooling (10).

Complaints
19
Filed with NHTSA
Crashes
1
Reported by owners
Fires
0
Reported by owners
Injuries
1
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Engine and engine cooling10
  2. Engine3
  3. Power train3
  4. Electrical system2
  5. Air bags2
  6. Visibility/wiper1
  7. Equipment adaptive/mobility1
  8. Service brakes1
  9. Fuel system, gasoline1
  10. Other / unknown1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Oct 30, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20063
20070
20082
20090
20100
20117
20121
20131
20141
20151
20161
20170
20180
20190
20201
20210
20220
20231

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Engine and engine cooling

10 reports
“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. *TR”
Owner complaint to NHTSAFiled Feb 18, 2012Engine and engine cooling, Power trainODI 10448412

Engine

3 reports
“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.”
Owner complaint to NHTSAFiled Feb 7, 2020EngineODI 11307839

Power train

3 reports
“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.”
Owner complaint to NHTSAFiled Sep 16, 2016Power trainODI 10907121

Electrical system

2 reports1 crash
“FALSE AIR BAG MALFUNCTION WARNING LIGHT CAUSED INITIAL DISTRACTION FOLLOWED BY FALSE STEERING WHEEL AIR BAG DEPLOYMENT.. TRYING TO STEER THE CAR DURING THIS EVENT AND DEAL WITH TRAFFIC, VEHICLE ENTERED INTERSECTION AND WAS HIT (T BONED) ON THE PASSENGER SIDE BY ANOTHER VEHICLE.. AIRBAGS ON THE PASSENGER SIDE THEN DEPLOYED.. NO AIRBAGS ON THE DRIVERS SIDE DEPLOYED - ONLY THE STEERING WHEEL AIR BAG PRIOR TO IMPACT.”
Owner complaint to NHTSAFiled Aug 28, 2015Electrical system, Air bagsCrash reportedODI 10760062

Air bags

2 reports1 crash
“2005 PORSCHE BOXSTER S, IS A 2 SEATER THAT LACKS ANY MEANS TO DISARM FRONT/SIDE PASSENGER AIRBAGS. DANGEROUS CONDITION FOR CHILD PASSENGER GIVEN THE LACK OF A BACK SEAT OR ALTERNATIVE SEATING. CERTAINTLY FORESEEABLE THAT CHILDREN WILL RIDE IN SUCH A VEHICLE. *JB”
Owner complaint to NHTSAFiled May 31, 2006Air bagsODI 10158695

Visibility/wiper

1 report
“Foam insulation blows out of windshield defroster vents. It is much worse when heat and fan are turned on. The windshield does not properly defrost and passengers are deluged with particulates and large chunks of black foam. This is a hazard to both breathing and visibility. Porsche is aware of the problem. Dealer says owners view as too expensive to fix. A recent Porsche Club of America newsletter article discusses the problem as a hazard and a paid advertisement pushes an alternative repair.”
Owner complaint to NHTSAFiled Mar 7, 2023Unknown or other, Visibility/wiperODI 11510582
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 30, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.