Porsche9112018Overview/porsche/911/2018/base/

2018 Porsche 911

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 911.

Body PASSENGER CARTransmission Automatic (AM-S7)

The 2018 Porsche 911 is a rear-wheel-drive passenger car equipped with a seven-speed automated manual transmission and achieves EPA fuel economy ratings of 22 mpg in the city, 30 mpg on the highway, and 25 mpg combined, placing it among the more efficient performance vehicles in its class. In terms of reliability, the model year recorded just one owner complaint, addressing the electrical system, alongside a single recall, representing notably low issue frequency for the nameplate. When contextualized against the vehicle's complaint history spanning 1990 to 2014—with the lowest baseline of just one complaint in 1991—the 2018 model demonstrates that Porsche has sustained the 911's evolution toward strong dependability, suggesting owners can expect a relatively trouble-free ownership experience compared to earlier generations.

Model year202620252024202320222021202020192018

Quick specs

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

Lug nut torque118 ft-lbsOEM · verified
EPA fuel economy22/30/25 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses OE oil filter 0PB115351. 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.

Tire size245/35ZR20; Rear: 305/30ZR20OEM · verified
Wheel / rim8.5-J; Rear: 11.5-J inOEM · verified

OE service part numbers OEM · verified

Engine oil filter0PB115351 alt 9A711549900
Engine air filter9P1129620 alt 99111013070
Fuel filter9P1201847 alt 99162016000
Spark plug0PB905612 alt 99917023690
Battery992915105A alt 99961109512
Front wiper blades99162890101
Serpentine belt0PB903137E alt 0PB903137A
Thermostat0PB121110A alt 9A110622597
Cabin air filter9P1819631 alt 99157237100

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (AM-S7)

Dimensions & weight NHTSA vPIC

Overall length176.8 in
Overall width72.8 in
Overall height51.2 in
Wheelbase96.5 in
Curb weight3263 lb
Track (front / rear)60.2 / 61.4 in
Weight distribution (front / rear)38/62

Ratings & economy EPA / vPIC

EPA city / highway / combined22 / 30 / 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 911 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

2.6–3.7 sec0–60 mph (tested)quickest 2.60 sec — 2018 GT2 RS Weissach Edition Coupe
YearTrim / engine0–60¼ mileHPDrivetrain
2018GT2 RS Weissach Edition Coupe 3.8L Twin-Turbo F-62.60 sec10.30 sec700 hpRWD
2018GT2 RS Weissach Edition Coupe 3.8L Twin-Turbo F-62.60 sec10.30 sec700 hpRWD
2018GT2 RS Weissach Edition Coupe 3.8L Twin-Turbo F-62.60 sec10.30 sec700 hpRWD
2018Turbo S Coupe 3.8L Twin-Turbo F-62.70 sec10.70 sec580 hpAWD
2018Turbo S Cabriolet 3.8L Twin-Turbo F-62.90 sec10.80 sec580 hpAWD
2018GT3 Coupe 4.0L F-63.00 sec11.10 sec500 hpRWD
2018GT3 Coupe 4.0L F-63.10 sec11.20 sec500 hpRWD
2018Carrera Cabriolet 3.0L Twin-Turbo F-63.50 sec11.90 sec370 hpRWD

Service quick specs OEM factory data

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

Torque lug nuts to 443 ft-lbs. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Engine torques

Intake Manifold to Engine Bolts9.5 ft-lbs
Intake Manifold to Engine Bolts9.5 ft-lbs
Exhaust Manifold to Cylinder Head Bolts11 ft-lbs
Intake Manifold to Engine Bolts9.5 ft-lbs
Intake Manifold to Engine Bolts9.5 ft-lbs
Exhaust Manifold to Cylinder Head Bolts22 ft-lbs

Chassis torques

Lug Nuts118 ft-lbs
Lug Nuts118 ft-lbs
Lug Nuts443 ft-lbs

Ignition

Spark Plug ManufacturerPorsche
Spark Plug TorqueNew Plug: 19 ft-lbs; Old Plug: 18 ft-lbs
Spark Plug ManufacturerPorsche
Spark Plug ManufacturerPorsche
Spark Plug Gap.023-0.031 in

Battery & A/C

Oil TypeSP-A2 or equivalent.
Oil Capacity3.53 oz

Service checks

Fuel Pump Pressure Minimum84.0
Fuel Pump Pressure Maximum90.0
Fuel Pump Pressure Minimum87.0
Fuel Pump Pressure Maximum92.8
Fuel Pump Pressure Minimum84.0
Fuel Pump Pressure Maximum90.0
Fuel Pump Pressure Minimum84.0
Fuel Pump Pressure Maximum90.0

Brakes

Brake Caliper Carrier to Hub Bolt Torque63 replace screws.
Vented Rotor Minimum Thickness for ReplacementFront: 1.260; Rear: 1.024
Vented Rotor Minimum Thickness after RefinishFront: 1.323; Rear: 1.087
Variation from Parallelism Thickness Variation.0008
Maximum Rotor RunoutCast Iron Rotors: Mounted:
Maximum Drum DiameterParking Brake: 7.126

Multi-step torque procedures OEM · verified

Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
12.0 ft. lbs., Step 2: 6.0 ft. lbs., Step 3: 902 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
12.0 ft. lbs., Step 2: 6.0 ft. lbs., Step 3: 902 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
16.0 ft. lbs., Step 2: 906 ft. lbs
Cylinder Head — tightening sequence 9 stages
1Bolts 1-83.5 ft. lbs
2Bolts 1-837 ft. lbs
3Loosen all screws
4Bolts 1-83 ft. lbs
5Bolts 1-89 ft. lbs
6Bolts 1-465 degrees
7Bolts 5-860 degrees
8bolts 1-465 degrees
9Bolts 5-860 degrees
16 Chain Housing Bolts9.5 ft. lbs
Cylinder Head — tightening sequence 11 stages
1M12 Bolts7.5 ft. lbs
2M12 Bolts37 ft. lbs
3Loosen all M12 Bolts
4M12 Bolts3 ft. lbs
5M12 Bolts9 ft. lbs
6M12 Bolts 1-465 degrees
7M12 Bolts 5-860 degrees
8M12 Bolts65 degrees
9M12 Bolts 5-860 degrees
10M6x80 Bolt 99.5 ft. lbs
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 2 stages
111 ft. lbs.11 ft. lbs
2Turn 35
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 2 stages
111 ft. lbs.11 ft. lbs
2Tighten an additional 45
Spark Plug Torque — tightening sequence 2 stages
124 ft. lbs. +/- 1.5 ft. lbs.24 ft. lbs
219 ft.lbs. +/- 219 ft.lbs
Spark Plug Torque — tightening sequence 2 stages
124 ft. lbs. +/- 1.5 ft. lbs.24 ft. lbs
219 ft.lbs. +/- 219 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 12,000 mi; coolant every 12,000 mi. The big-interval services (every 12,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 10,000 miBrake Line (inspect) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (inspect) · Underbody Splash Shield (inspect)
Every 12,000 miBody Fasteners (inspect) · Body Water Drains (inspect) · CV Joint Boot (inspect) · Engine Coolant System (inspect fluid level) · Exhaust System (Complete) (inspect) · Spark Plugs (replace)
Every 20,000 miActive Suspension System (inspect fluid level) · Air Intake System (inspect) · Brake System (inspect) · Cabin Air Filter (replace) · Convertible Top (inspect) · Driveshaft (inspect)
Every 24,000 miDrive Belt (replace) · Engine Air Filter Element (replace) · Engine Mount (inspect) · Fuel Line (inspect) · Tie Rod (inspect)
Every 40,000 miAccessory Drive Belt (inspect) · Body Latches, Locks & Hinges (inspect) · Brake Linings (inspect) · Brake Rotor (inspect) · Seat Belt System (inspect)
Every 48,000 miClutch Hydraulic System (drain & refill)
Every 72,000 miUnderbody (inspect)
Every 96,000 miTransmission Assembly (drain & refill)
At 120,000 miDrive Axle Assembly (drain & refill) · Transfer Case 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.

Within the supplied federal record, earlier 911 model years show generally low owner complaints and modest recall activity, with the notable exception of 2007, which recorded 50 complaints, one recall, one investigation, and 374 TSBs. By 2014, reported complaints dropped back to just two, with one recall and 346 TSBs, indicating the generation’s visible defect reports eased after the 2007 spike. For the 2018 target year, the year-by-year table contains no complaints, recalls, investigations, or TSB counts, while the top-complaint summary lists only one Electrical System complaint and zero crash or fire complaints. That places 2018 near the low-complaint end of the arc shown, with no severe safety complaints in the data. Because the record does not specify root causes or recall coverage for 2018, a buyer should still confirm service history and any open campaigns. Overall, based strictly on the provided federal data, the 2018 911 appears to be a comparatively clean year to buy.

1
Open recalls
NHTSA campaigns
536
Service bulletins
Manufacturer communications
1
ODI investigations
Office of Defects Investigation
1
Owner complaints
0 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Frontal★★★★
Side★★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 1 complaints on record, top 1 components.

Electrical System1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 536 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 911. 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

Does the 2018 911 have open recalls?

NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 911 get?

EPA figures are 22 city / 30 highway / 25 combined mpg.