PorscheBoxster2015Overview/porsche/boxster/2015/base/

2015 Porsche Boxster

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2015 Boxster.

Body PASSENGER CARTransmission Automatic (AM-S7)

The 2015 Porsche Boxster, a passenger car with an automatic (AM-S7) transmission, delivers EPA-rated fuel economy of 22/31/25 mpg. Owner feedback for this model year is limited to just three complaints, focused on the power train, and two recalls. Within the Boxster’s 1997–2024 history, where complaint counts range from a high of 34 in 1998 to a low of 1 in 2008, the 2015 model stands out as a notably trouble-free entry.

Model year201620152014201320122011201020092008

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacityOil type and capacity will vary by model and options. Refer to the appropriate service information for the oil type and quantity.OEM · verified
EPA fuel economy22/31/25 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI NS · NS CCA battery, OE oil filter 0PB115499A. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI NS · NS CCAOEM · verified
Tire sizeFRONT; P235/45ZR18, P265/45ZR18OEM · verified
Wheel / rim8-J, 9-J inOEM · verified

OE service part numbers OEM · verified

Engine oil filter0PB115499A alt 0PB115466A
Engine air filter98111013000
Spark plug99917015190
Battery992915105A alt 99961109512
Front wiper blades99162890101
Serpentine belt0PB903137A
Thermostat0PB121110A alt 0PB121688
Cabin air filter9P1819631 alt 99157237100

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (AM-S7)

Dimensions & weight NHTSA vPIC

Overall length172 in
Overall width70.9 in
Overall height50.4 in
Wheelbase97.6 in
Curb weight2932 lb
Track (front / rear)59.8 / 61.4 in
Weight distribution (front / rear)46/54

Ratings & economy EPA / vPIC

EPA city / highway / combined22 / 31 / 25 mpg
DrivetrainRear-Wheel Drive
Recommended fuelPremium Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the Boxster of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

4.1–4.2 sec0–60 mph (tested)quickest 4.10 sec — 2015 GTS Convertible
YearTrim / engine0–60¼ mileHPDrivetrain
2015GTS Convertible 3.4L F-64.10 sec12.60 sec330 hpRWD
2015GTS Convertible 3.4L F-64.20 sec12.80 sec330 hpRWD
2016Spyder Convertible 3.8L F-64.00 sec12.20 sec375 hpRWD
2013S Convertible 3.4L F-64.10 sec12.60 sec315 hpRWD
2013S Convertible 3.4L F-64.20 sec12.70 sec315 hpRWD
2013S Convertible 3.4L F-64.20 sec12.70 sec315 hpRWD
2013S Convertible 3.4L F-64.40 sec12.90 sec315 hpRWD
2013S Convertible 3.4L F-64.40 sec13.10 sec315 hpRWD

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine SAE 75W in the differential, DOT 4 · synthetic brake fluid. Torque the oil drain plug to 37.0 ft-lbs. The firing order is 1-6-2-4-3-5.

Lubricants & capacities

Brake FluidDOT 4 · synthetic
Clutch FluidDOT 4
Differential Gear OilSAE 75W
Differential Gear Oil CapacityClutch Actuation and Gearshifts 5.6 quarts Gear Wheel Oil and Differential Chambers 3.0 quarts.
Manual Transmission FluidPorsche part number 00004320419
Manual Transmission Fluid Capacity6.5
Power Steering FluidPentosin CHF11S

Engine torques

Camshaft Bearing/Carrier Cap Bolts or Studs96.0 inch lbs. ft-lbs
Crankshaft Pulley and/or Damper Bolts74 ft-lbs
Intake Manifold to Engine Bolts9.5
Exhaust Manifold to Cylinder Head Bolts17
Engine Oil Pan Drain Plug37.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/StudsM6: 114.0 inch lbs., M32: 30.0 ft-lbs

Chassis torques

Steering Track (Rod End) Bolts63.0 ft-lbs
Front Wheel HubWheel hub to wheel carrier, 340 ft-lbs
Rear Wheel Hub340 ft-lbs
Rear Wheel Hub Bearing Housing BoltsInstall new hub nut. ft-lbs

Ignition

Cylinder Firing Order1-6-2-4-3-5

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.92 lbs
Oil GroupPAG

Service checks

Key ON Engine OFF (KOEO)68-77 ( low pressure side)

Brakes

Minimum Pad ThicknessFront: 0.079; Rear: 0.079 in
Minimum Shoe Thickness0.079 in
Vented Rotor Minimum Thickness for ReplacementFront: 1.024; Rear: .709
Vented Rotor Minimum Thickness after RefinishFront: 1.047; Rear: .732
Variation from Parallelism Thickness Variation.0007
Maximum Rotor Runout.001
Maximum Drum DiameterParking Brake: 7.126

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
115.0 ft. lbs., Step 2: 9015 ft. lbs
Connecting Rod (Large End) Bearings — tightening sequence 1 stages
142.0 inch lbs., Step 2: 15.0 ft. lbs., Step 3: 80 degrees, Step 4: Loosen all bolts completely, Step 5: 42.0 inch lbs., Step 6: 15.0 ft. lbs., Step 7: 8042 in
Engine Flywheel Bolts — tightening sequence 1 stages
119.0 ft. lbs., Step 2: 12019 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 10,000 mi; spark plugs every 40,000 mi.

Every 10,000 miEngine Oil (drain & refill) · Engine Oil Filter (replace)
Every 20,000 miActive Suspension System (inspect fluid level) · Air Bag System (inspect) · Air Intake Duct (inspect) · Battery (inspect) · Body Water Drains (inspect) · Brake Line (inspect)
At 40,000 miAccessory Drive Belt (inspect)
Every 40,000 miDriveshaft (inspect) · Engine Air Filter Element (replace) · Exhaust System (Complete) (inspect) · Fuel Line (inspect) · Seat Belt System (inspect) · Spark Plugs (replace)
Every 60,000 miAccessory Drive Belt (inspect) · Drive Belt (replace)
Every 80,000 miEngine Mount (inspect)
At 120,000 miDrive Axle Assembly (drain & refill) · Transmission Assembly (drain & refill)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2015 Porsche Boxster sits near the tail end of a minor escalation in complaint and recall activity that began in 2013, which recorded 10 complaints and 1 recall—the highest complaint count in over a decade. Comparing 2015 to 2013, the target year shows a meaningful improvement with only 3 complaints and 2 recalls, yet it remains elevated compared to the remarkably quiet 2007–2012 period, during which complaints never exceeded 3 and recalls were absent entirely. By 2016 and 2017, activity largely returns to baseline levels, suggesting the 2013–2015 period represented a localized spike rather than a systemic deterioration. The 428 TSBs in 2015 is the highest count in the generation, though this metric typically reflects service bulletins issued rather than defects, and zero crash or fire complaints is a strong indicator of occupant safety. The 2015 model appears to be a transitional year—cleaner than the 2013 peak but still bearing the residual recall activity from that period, with no data indicating persistent root-cause issues specific to this model year. Overall, the 2015 Boxster presents a favorable profile within this generation, offering the refinement gains of the post-2012 generation with complaint levels that are low in absolute terms.

2
Open recalls
NHTSA campaigns
428
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
3
Owner complaints
0 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 3 complaints on record, top 3 components.

Power Train1
Steering,Suspension,Wheels1
Suspension,Engine1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

21V679000Power Train:Axle AssemblyReported 01/09/2021

Porsche Cars North America, Inc. (Porsche) is recalling certain 2013-2015 Boxster, 2013-2014 Boxster S, 2014-2015 Cayman, Cayman S, 2015 Boxster GTS, and Cayman GTS vehicles. The rear-axle carrier side sections may… Remedy: Dealers will replace the rear-axle carrier side sections, free of charge. Owner notification letters were mailed January 6, 2022. Owners may contact Porsche customer service at…

14V698000Latches/Locks/Linkages:Hood:LatchReported 04/11/2014

Porsche Cars North America, Inc. (Porsche) is recalling certain model year 2014-2015 Porsche 911, Boxster, and Cayman vehicles manufactured May 7, 2014, to September 23, 2014. The front hood upper lock components were… Remedy: Porsche will notify owners, and dealers will replace the lock on the front hood, free of charge. The recall began December 12, 2014. Owners may contact Porsche customer service at…

Technical service bulletins NHTSA · verified

Showing 5 of 428 bulletins on record with NHTSA.

BulletinDateComponentSummary
40/26 44072026-06-30WheelsWheel Bolt Replacement Requirement - Change from Wheel Bolts with Aluminum Washers to…
09/26 37302026-06-30Power TrainPermanent Fault Memory Entries “P1775”/“P071400”/“P184900” in Transmission Electronics…
TSTR26362026-06-29Unknown Or OtherPorsche Tester Software Update Information Software Version: 44.200.031
TSTR26352026-06-29Unknown Or OtherPorsche Tester Software Update Information Software Version: 44.200.030
20/262026-06-25EngineOverview of Approved Porsche C20 Engine Oils (20/26)

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Boxster. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 2015 Boxster take?

Oil type and capacity will vary by model and options. Refer to the appropriate service information for the oil type and quantity. of Oil type and capacity will vary by model and options. Refer to the appropriate service information for the oil type and quantity., per the factory manual.

Does the 2015 Boxster have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the Boxster get?

EPA figures are 22 city / 31 highway / 25 combined mpg.