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4C platform

2018 Alfa Romeo 4C

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 4C.

Body PASSENGER CARTransmission Automatic (AM6)

The 2018 Alfa Romeo 4C is a passenger car built on the dedicated 4C platform, channeling its power through an automatic AM6 transmission. Its EPA-estimated fuel economy of 24 mpg city, 34 highway, and 28 combined underscores an efficient balance for a focused driver’s car. As a later model year in the 4C’s production run, it benefits from the accumulated refinements of the platform, offering a more sorted and dependable ownership experience.

Model year2020 2019 2018 2017 2016 2015

Quick specs

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

Lug nut torque72 ft-lbsOEM · verified

EPA fuel economy24/34/28 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI 140R · 500 CCA battery, OE oil filter 68237532AA. 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 140R · 500 CCAOEM · verified

Tire sizeP205/45ZR17; Rear: P235/40ZR18OEM · verified

Wheel / rim7.0; Rear: 8.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter	68237532AA
Engine air filter	68251477AA
Spark plug	68122874AA
Battery	BBH5F001AA
Front wiper blades	68240852AA
Serpentine belt	68237775AA
Thermostat	68237480AA alt 68237449AA

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

Transmission

Automatic (AM6)

Dimensions & weight NHTSA vPIC

Overall length	157.1 in
Overall width	73.6 in
Overall height	46.5 in
Wheelbase	93.7 in
Curb weight	2465 lb
Track (front / rear)	64.6 / 63 in
Weight distribution (front / rear)	41/59

Ratings & economy EPA / vPIC

EPA city / highway / combined	24 / 34 / 28 mpg
Drivetrain	Rear-Wheel Drive
Recommended fuel	Premium Gasoline

Performance & power Independent road tests

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

Independent road tests for the 4C of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

4.1–4.6 sec0–60 mph (tested)quickest 4.10 sec — 2015 Coupe

Year	Trim / engine	0–60	¼ mile	HP	Drivetrain
2015	Coupe 1.7L Turbo I-4	4.10 sec	12.80 sec	237 hp	RWD
2015	Launch Edition Track Package Coupe 1.7L Turbo I-4	4.10 sec	12.80 sec	237 hp	RWD
2015	Launch Edition Coupe 1.7L Turbo I-4	4.20 sec	12.80 sec	237 hp	RWD
2015	Spider 1.7L Turbo I-4	4.20 sec	12.90 sec	237 hp	RWD
2015	Coupe 1.7L Turbo I-4	4.30 sec	13.00 sec	237 hp	RWD
2015	Coupe 1.7L Turbo I-4	4.30 sec	12.80 sec	237 hp	RWD
2015	Launch Edition Coupe 1.7L Turbo I-4	4.30 sec	13.00 sec	237 hp	RWD
2015	Spider 1.7L Turbo I-4	4.30 sec	12.90 sec	237 hp	RWD

Service quick specs OEM factory data

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

Torque lug nuts to 72 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.

Lubricants & capacities

Engine Coolant	MS90032
Engine Coolant Capacity	11.2

Engine torques

Crankshaft Position (CKP) Sensor Bolt(s)	7.4 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)	7.4 ft-lbs
Camshaft Bearing/Carrier Cap Bolts or Studs	11.0 ft-lbs
Engine Coolant Temperature (ECT) Sensor Bolt(s)	22.0 ft-lbs
Oxygen (O2S) Sensor Bolt(s)	33.0 ft-lbs
Intake Manifold to Engine Bolts	14.7 ft-lbs
Exhaust Manifold to Cylinder Head Bolts	19 ft-lbs
Oil Pan to Block Bolts	6.9 ft-lbs

Chassis torques

Lug Nuts	72 ft-lbs
Front Wheel Hub	206.0 Do not re-use old nut ft-lbs
Rear Wheel Hub	162.0-331.0 Do not re-use old nut ft-lbs

Battery & A/C

Refrigerant	R1234yf
Refrigerant Capacity	1.06 lbs
Oil Type	ND 12 Oil
Oil Capacity	3.05-3.71 oz
Standard BCI Group Number	140R
Standard BCI Cranking Performance	500 cca

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 2 stages

1	18.0 ft. lbs.	18 ft. lbs
2	60

Cylinder Head — tightening sequence 4 stages

1	14.7 ft. lbs.	14.7 ft. lbs
2	90 degrees	90 degrees
3	90 degrees	90 degrees
4	90 degrees	90 degrees

Engine Flywheel Bolts — tightening sequence 2 stages

1	36.0 ft. lbs.	36 ft. lbs
2	50

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 2,000 mi; spark plugs every 36,000 mi.

Every 2,000 mi	Engine Oil (inspect fluid level)
Every 10,000 mi	Engine Oil (drain & refill) · Engine Oil Filter (replace)
At 12,000 mi	Body Fasteners (inspect)
Every 12,000 mi	Battery (inspect) · Body Latches, Locks & Hinges (inspect) · Brake Linings (inspect) · Brake Rotor (inspect) · Engine Air Filter Element (replace) · Engine Mount (inspect)
Every 24,000 mi	Body Fasteners (inspect)
At 36,000 mi	Timing Belt (inspect)
Every 36,000 mi	Accessory Drive Belt (inspect) · Spark Plugs (replace)
Every 60,000 mi	Drive Belt (replace) · Timing Belt (inspect) · Timing Belt (replace)
Every 72,000 mi	Transmission Assembly (inspect fluid level)

Reliability & federal safety record

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

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

0 involved a crash · 0 a fire

NHTSA crash-test rating federal NCAP · out of 5 stars

Side★★★★★

Rollover★★★★★

No owner complaints on record with NHTSA for this vehicle.

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 54 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
31-001-25 REV. B	2025-08-16	Structure	Aluminum Body Panel Corrosion Repair Aluminum corrosion or bubbling along the leading…
31-001-25 REV. A	2025-08-14	Structure	Aluminum Body Panel Corrosion Repair Aluminum corrosion or bubbling along the leading…
31-001-25	2025-08-13	Structure	Aluminum Body Panel Corrosion Repair Aluminum corrosion or bubbling along the leading…
31-001-24	2024-07-24	Structure	"Aluminum Body Panel Corrosion Repair Aluminum corrosion or bubbling along the leading…
S1408000384	2024-01-10	Electrical System	Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State…

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 4C. 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.

Group 140R battery 4C-platform vehicles Engine oil filter 68237532AA Engine air filter 68251477AA Spark plug 68122874AA Battery BBH5F001AA

Reference guides

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

Vehicle recalls & TSBs OBD-II trouble codes Torque specifications Maintenance schedules Fluid capacities & specs

Frequently asked

Does the 2018 4C have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 4C get?

EPA figures are 24 city / 34 highway / 28 combined mpg.