NHTSA lists 3 safety recalls and 28 owner complaints for the 1999 Porsche Boxster. Most complaints involve engine and engine cooling (16) and air bags (7). The EPA rates it 17–20 mpg combined.
DOPE, INC. IS RECALLING 42,540 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THESE LAMPS DO NOT CONTAIN THE REQUIRED AMBER SIDE REFLECTORS.
SABERSPORT IS RECALLING 16,270 COMBINATION CORNER AND BUMPER LAMP ASSEMBLIES OF VARIOUS PART NUMBERS SOLD FOR USE AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES. THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THESE LAMPS DO NOT CONTAIN THE REQUIRED AMBER SIDE REFLECTORS.
CERTAIN 2-DOOR CONVERTIBLE PASSENGER VEHICLES EQUIPPED WITH THE TIPTRONIC (AUTOMATIC) TRANSMISSION MAY HAVE BEEN PRODUCED WITH AN INCORRECTLY ADJUSTED KEY-LOCK-CABLE DOWN TO THE SHIFT SELECTOR. IF THE KEY-LOCK-CABLE IS NOT ADJUSTED CORRECTLY, IT IS POSSIBLE THAT THE IGNITION KEY WILL SNAG UPON BEING REMOVED FRO THE IGNITION LOCK OR THE SLECTOR LEVER CAN BE SHIFTED FROM POSITION "P" WITH THE IGNITION KEY REMOVED AND THE LOCKING BUTTON OPERATED.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Complaints for each Boxster model year we’ve synced.
| Model year | NHTSA complaints |
|---|---|
| 1997 | 22 |
| 1998 | 32 |
| 1999 | 28 |
| 2000 | 5 |
| 2001 | 13 |
| 2002 | 11 |
| 2003 | 19 |
| 2004 | 4 |
| 2005 | 19 |
| 2006 | 5 |
| 2007 | 2 |
| 2008 | 1 |
| 2009 | 3 |
| 2010 | 2 |
| 2011 | 2 |
| 2012 | 1 |
| 2013 | 10 |
| 2014 | 2 |
| 2015 | 3 |
“MISFIRES DURING WARM UP, AFTER WARM UP THE ENGINE RUNS SMOOTH WITH HIGH RPM OF 1200 TO 1300. I HAVE TO TAP THE ACCELERATOR PAD TO LOWER THE RPM,AFTER COUPLE OF SECONDS THE RPM GOES BACK UP. WHEN IT REACHES 190 DEGREES RPM GOES HIGHER TO ALMOST 1500, TEMPERATURE GOES TO 210 DEGREES FAN TURNS ON FROM THE RADIATOR ON THE DRIVER SIDE BUT NOT ON THE PASSENGER SIDE, FAN ON THE ENGINE COMPARTMENT SOMETIMES TURNS ON AND SOMETIMES NOT . THEN THE ENGINE STOPS RUNNING AT 210 DEGREES, START UP BUT WON'T RUN. YOU HAVE TO WAIT FOR THE TEMPERATURE TO DROP DOWN TO 160 DEGREES, SOMETIMES ALL THE WAY DOWN. START IT UP THEN THE ENGINE RUNS. *TR”
“THE AIRBAG LIGHT HAS COME ON FOR THE THIRD TIME. THE PROBLEM IS IN A SENSOR IN THE SEATBELT. EACH TIME IT IS THE SAME PROBLEM AND PORSCHE WANTS ME TO SPEND $550 TO REPLACE THE UNIT WITH THE FOURTH SENSOR. I HAVE DECLINED TO DO THIS AS THEY WILL NOT WARRANTY THE NEW UNIT. THIS IS A WELL KNOWN DEFECT IN THIS CAR ACCORDING TO SERVICEMEN AND THERE ARE SIMILAR COMPLAINTS ON YOUR WEBSITE. I HAVE CALLED AND WRITTEN TO PORSCHE WITHOUT RESPONSE. *LN”
“AIRBAG WARNING LAMP STAYING ON DUE TO A POORLY DESIGNED SENSOR SYSTEM THAT RELIES ON SEAT BELT BUCKLE AND GROUNDING SYSTEM ELECTRICAL RESISTANCES BEING INCREDIBLY STABLE OVER TIME. THIS IS A DESIGN FLAW THAT HAS BEEN ADDRESSED BY REDESIGNED SEAT BELT RECEPTACLES AND REPLACING WIRES. IF YOU DON'T FIX THIS PROBLEM, YOU WILL NEVER KNOW IF YOU HAVE A REAL PROBLEM WITH THE AIRBAG SYSTEM, WHICH IS OBVIOUSLY A SAFETY ISSUE. IF YOU WANT TO CLEAR THIS LAMP INDICATION, YOU MUST SHELL OUT $500 TO $1500 TO DO SO. HOW DOES PORSCHE HAVE THE NERVE TO CHARGE CUSTOMERS FOR AN OBVIOUS DESIGN FLAW ON THEIR PART WHICH LEADS TO AN AIRBAG WARNING LAMP BEING ILLUMINATED, WHICH IS A SAFETY ISSUE IF NOT CORRECTED. MY INCIDENT IS FAR FROM AN ISOLATED ONE. I'VE CHECKED OUT OTHER COMPLAINTS VIA THE INTERNET. *JB”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Boxster Man 5-spd, 6 cyl, 2.5 L · Rear-Wheel Drive | 17 | 24 | 20 | $4,000 | 444 |
| Boxster Auto 5-spd, 6 cyl, 2.5 L · Rear-Wheel Drive | 15 | 22 | 17 | $4,700 | 523 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
3 safety recalls as of Oct 31, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 28 complaints with NHTSA. The most-cited components are engine and engine cooling (16), air bags (7), electrical system (3). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 1999 Porsche Boxster at 17–20 mpg combined, depending on engine and drivetrain (2 versions rated).