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981 · 2013–2016

2016 Porsche Boxster

2.7 L flat 6 · RWD · Roadster · water-cooled

Power
265hp
Torque
206lb-ft
0–60
5.5s
Weight
2,888lb
lb / hp
10.9
Displacement
2.7L

Specification

US-market 2016
Power 265 hp
201 493
Weight 2,888 lb
2,778 3,212
Weight to power 10.9 lb/hp
6.5 lower is quicker 13.8

Where this car sits against every Boxster in the catalog.

Engine
Engine code MA1.22 (9A1)
Layout flat 6, water-cooled
Displacement 2.7 L
Aspiration Naturally aspirated
Power 265 hp @ 6,700 rpm
Torque 206 lb-ft @ 4,500 rpm
Redline 7,800 rpm
Specific output 98 hp / L
Chassis & body
Drivetrain Rear-wheel drive
Body styles Roadster
Transmissions 6-speed Manual · 7-speed PDK
Curb weight 2,888 lb
Wheelbase 97.4 in
Length 172.2 in
Width 70.9 in
Height 50.4 in
Performance & market
0–60 mph 5.5 s
Top speed 164 mph
Weight to power 10.9 lb / hp
MSRP when new $49,500 base

About the 2016 Boxster

2016Cayman GT4 and Boxster Spyder arrive with the 991 Carrera S 3.8 and manual gearboxes only. Final 981 model year, and the last naturally aspirated flat-six in the ordinary range.

BoxsterLonger, wider and lighter than the 987, with a fully automatic fabric top that works at speed.

Known issues

7 Specific to the Boxster

Coolant pump failure

Major $900–$1,900
Affects

All 981, more commonly at higher mileage.

What happens

The coolant pump fails and can shed impeller material into the cooling system. Caught early it is a routine part; caught late it means flushing debris out of everything downstream.

Symptoms
  • Temperature climbing in traffic
  • Coolant weeping at the pump
  • Coolant loss with no obvious external leak
  • Overheat warning under sustained load
What to do

Replace with the thermostat while the system is open. Many owners treat it as preventive at high mileage rather than waiting.

Parts for this job

PDK mechatronic faults

Major $1,300–$8,500
Affects

PDK-equipped cars.

What happens

Sensor and solenoid faults in the mechatronic unit produce harsh engagement, refused gears or a limp-home restriction.

Symptoms
  • Jerky low-speed engagement
  • Transmission warning or flashing gear indicator
  • Stuck in one gear
  • Clutch adaptation fault codes
What to do

Fluid, filter and a fresh adaptation resolve a meaningful share of complaints. A true mechatronic replacement is the largest single bill on the car.

Cylinder scoring (rare on this engine)

Major $14,000–$25,000
Affects

Isolated reports only. Nothing resembling the M96 and M97 frequency — but not zero, so a borescope on a high-mileage car settles the question cheaply.

What happens

The same mechanism as the older engines: liner surface degradation and piston skirt contact, showing as oil consumption and lost compression.

Symptoms
  • Rising oil consumption
  • Cold-start ticking
  • Uneven compression or leak-down
What to do

No preventive fix. Do not let a seller tell you a 9A1 "cannot" score — it is rare, not impossible, and the inspection costs very little.

PCM infotainment aging

Minor $700–$2,200
Affects

All 981. The system predates CarPlay entirely.

What happens

The factory head unit is slow by current standards, its mapping is obsolete, and Bluetooth pairing becomes unreliable with age.

Symptoms
  • Sluggish screen response
  • Bluetooth dropping
  • Navigation data no longer updatable
  • Screen delamination at the edges
What to do

Retrofit units that add CarPlay while keeping the factory appearance are widely available and are the highest-satisfaction upgrade owners report on this generation.

Parts for this job

Convertible top faults

Minor $300–$1,500
Affects

Boxster. Markedly more reliable than the 986 and 987 mechanisms.

What happens

The fully automatic top operates at low speed and depends on sensors and hydraulics that can fault with age or after water ingress.

Symptoms
  • Top stopping partway through its cycle
  • Warning message when operating the roof
  • Roof not latching cleanly
What to do

Usually a sensor or a microswitch rather than the mechanism. Cycle it fully several times at inspection.

Radiator debris and corrosion

Minor $800–$2,000
Affects

All 981.

What happens

Low front radiators collect leaves and grit that hold moisture against the cores until they corrode.

Symptoms
  • Gradual coolant loss
  • Weak air conditioning
  • Debris visible through the bumper ducts
What to do

Grille screens and an annual clear-out. Replace radiators and condensers as a set once they weep.

Parts for this job

Air–oil separator failure

Minor $600–$1,300
Affects

All 981, far less frequently than on the older engines.

What happens

The separator diaphragm tears and the engine draws oil into the intake.

Symptoms
  • White smoke at start or under load
  • Rough idle
  • Oil consumption with no external leak
What to do

Replace the AOS.

Parts for this job

Service intervals

10
Item Interval
Engine oil and filter 10,000 mi or annually
Spark plugs 40,000 mi
Brake fluid 2 years
Coolant Long-life, inspect at service
PDK fluid and filter 40,000 mi
Manual clutch 60,000–100,000 mi
Coolant pump Preventive at high mileage
Serpentine belt 4 years / 40,000 mi
Convertible top drains Annually
Cabin and engine air filters 2 years / 20,000 mi

What fits this car

33 Sizes, capacities and part specs

The answers you need when something has already failed — bulb sizes by position, wiper lengths, battery group, fluid specs and capacities. Sizes are for US-spec cars and are a starting point: options and mid-year changes move them, so check against your own car and its VIN before ordering.

Bulbs

8
Low / high beam — bi-xenon D3S 35W Shop →
Low beam — halogen H7 55W Base cars without the xenon option. Shop →
Front turn signal PY21W Shop →
Daytime running light LED, integrated —
Fog light H11 55W Shop →
Brake / tail LED Not a replaceable bulb. Shop →
Reverse P21W Shop →
Licence plate W5W Shop →

Wiper blades

2
Driver side 26 in Shop →
Passenger side 24 in Shop →

Battery

3
Group size Group 48 (H6) AGM Shop →
Location Front luggage compartment —
Registration required Yes Code a replacement to the car so charging suits the new battery. —

Fluids and capacities

8
Engine oil — capacity 7.9 qt with filter —
Engine oil — specification 0W-40, Porsche A40 approved Shop →
Coolant — capacity 21 qt —
Coolant — specification Porsche pink G40, phosphate-free Shop →
Brake fluid DOT 4, low viscosity Shop →
PDK fluid 8.5 qt, Porsche-specific ATF Shop →
Manual transmission 2.6 qt, 75W-90 GL-5 Shop →
Fuel tank 16.9 gal —

Wheels and tyres

9
Bolt pattern 5 x 130 mm
Centre bore 71.6 mm
Lug bolt thread M14 x 1.5
Tyre size — 18 in front 235/45 ZR18
Tyre size — 18 in rear 265/45 ZR18
Tyre size — 19 in front 235/40 ZR19
Tyre size — 19 in rear 265/40 ZR19
Tyre size — 20 in front 235/35 ZR20
Tyre size — 20 in rear 265/35 ZR20

Torque values

3 Safety-relevant. Verify against factory documentation before relying on these.
Wheel lug bolts 96 lb-ft (130 Nm) Star pattern, on the ground, calibrated wrench.
Engine oil drain plug 37 lb-ft (50 Nm) New sealing washer every time.
Oil filter housing cap 18 lb-ft (25 Nm)

Fitment for the 2016 981 Boxster. Torque values in particular are safety-relevant — verify against factory documentation rather than relying on this page alone.

Buying guide

8
  1. 01

    This is the calm generation — buy on condition

    No intermediate shaft, no bore-scoring epidemic, a short and mostly cheap failure list. Spend your inspection budget on the gearbox, the cooling system and the service file rather than on engine anxiety.

  2. 02

    The naturally aspirated six is the whole point

    Every ordinary 981 revs to 7,800 rpm on six cylinders. From the 982 the base and S cars are turbocharged flat-fours. That single fact is why 981 values have held the way they have, and it will not reverse.

  3. 03

    Drive the base car before assuming you want the S

    The 2.7 is lighter over the nose and, to a lot of owners, the more delicate thing to drive quickly. You give up straight-line pace and very little of what makes the car good.

  4. 04

    GTS is a package, not a power figure

    The extra 15 hp is the least interesting part. Lowered PASM, Sport Chrono, Sport Exhaust and the trim add up to a car that would cost more to option individually — which is why a used GTS is usually the better buy than a heavily optioned S.

  5. 05

    Insist on PDK fluid history

    Records separate a maintained gearbox from a gamble on the most expensive component in the car.

  6. 06

    Budget for the infotainment

    No CarPlay and dated mapping. A retrofit is one of the few upgrades that measurably improves daily use and survives resale.

  7. 07

    Manual carries a premium and will keep it

    PDK is genuinely excellent here, but the market has decided which one it wants. A manual GTS or Cayman S is the configuration people hunt.

  8. 08

    Cycle the top fully on a Boxster

    Far more reliable than the older mechanisms, but a fault is still cheaper to find before you buy than after.

Parts and gear

16 Chosen for this car, not for the commission

What a Boxster actually costs to keep, grouped by why you would buy it. Prices are typical US parts-only figures — labour is separate, and the DIY note says whether that matters. Where a link earns us a commission it costs you nothing and never changes what appears here.

Parts that fix a known problem on this car

4 Each one maps to an issue above
  • Cooling $350–$800

    Coolant pump and thermostat

    The failure above and the part that fixes it. Do the thermostat at the same time — the system is already open and the labour overlaps almost entirely.

    FCP Euro → Shop job
  • Interior $700–$2,200

    CarPlay-capable PCM retrofit

    Replaces the dated head unit with one that keeps the factory look and adds CarPlay and current mapping. The upgrade 981 owners consistently rate highest, and it holds value at resale.

    FCP Euro → DIY or shop
  • Engine $250–$550

    Air–oil separator

    Less failure-prone than on the older engines, but the same alarming symptom and the same straightforward fix.

    FCP Euro → DIY or shop
  • Cooling $600–$1,400

    Radiator and condenser pair

    No repair once the cores weep. Do both sides and the condensers behind them while the bumper is off.

    FCP Euro → Shop job

Worth doing before it fails

3 Cheaper than the repair it avoids
  • Cooling $100–$250

    Radiator grille screens

    The cause of the repair above. Cheap mesh in the ducts against an expensive pair of radiators.

    Shop this → DIY
  • Exterior $600–$2,000

    Paint protection film for the nose

    A low, wide front end on a car people actually drive. Film before the first road trip rather than paying for paint after.

    Shop this → Shop job
  • Chassis $250–$600

    Engine and transmission mount set

    High-mileage mounts let the drivetrain move and blunt the response. Worth doing on a car that feels less sharp than it should.

    FCP Euro → Shop job

Consumables you will rebuy

5 Ordinary running costs
  • Fluids $270–$550

    PDK fluid and filter kit

    The service that protects the mechatronic unit. Correct-specification fluid and the filter together.

    Shop this → Shop job
  • Fluids $85–$160

    Porsche-approved engine oil

    Approved specification only — the long factory interval depends on it.

    Shop this → DIY
  • Fluids $18–$50

    Oil filter and hardware

    Bought with every change. Still worth cutting open on a high-mileage car.

    Shop this → DIY
  • Fluids $20–$70

    Brake fluid

    Two years, annually with track use. The cheapest meaningful brake improvement available.

    Shop this → DIY
  • Service $30–$85

    Cabin and engine air filters

    Straightforward jobs that carry real shop labour. Order with the oil.

    Shop this → DIY

Tools worth owning

4 Bought once, used for years
  • Diagnostics $250–$1,000

    Porsche-specific diagnostic interface

    The only way to tell a PDK adaptation that needs resetting from a mechatronic that needs replacing, before you authorise the work.

    Shop this → DIY
  • Inspection $50–$220

    Borescope camera

    Scoring is rare on this engine, not impossible. On a high-mileage car the inspection is cheap and the answer is worth having.

    Shop this → DIY
  • Lifting $160–$450

    Low-profile jack and jack pads

    The 981 sits low and its jack points need proper pucks to avoid crushing the sill.

    Shop this → DIY
  • Storage $55–$140

    Battery tender

    A low battery on a car this electronically dense produces faults across systems that have nothing to do with charging.

    Shop this → DIY