Mazda2018–2023Technical specifications

MX-5 2.0: Technical specifications

Workshop data for the 2-litre petrol (engine code SKYACTIV-G 2,0). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Common faults & fixes

Summary

Match the engine code (SKYACTIV-G 2,0) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Mazda
Model: MX-5
Years: 2018–2023
Fuel: Petrol
Engine code: SKYACTIV-G 2,0

Performance & efficiency

Power: 135 kW (184 hp)
Engine size: 1,998 cc
Cylinders: 4 · DOHC
Compression ratio: 13.0:1
Fuel system: Mazda

Fluids & capacities

Engine oil (with the filter): 4.3 litres

All 105 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/DOHC
Capacity (Fiscal) cc	1998
Compression ratio :1	13,0
Suitable for unleaded petrol	Yes
Minimum octane rating RON	95
Ignition system Description	Map-DI
Trigger location	Cam/Crankshaft
Fuel system Make	Mazda
Fuel system Description	MFI-s(d)
Air metering Type	Mass/MAP
Combined ignition and fuel ECM	Yes
Diagnostic socket	Yes

Ignition system

Ignition coil supply voltage + with ballast V	12,0

Firing order

The firing order for the Mazda MX-5 2.0 (2018–2023) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances on the Mazda MX-5 2.0 (2018–2023) are hydraulic — they self-adjust, so no manual clearance figure applies.

Valve clearance - INLET mm	Hydraulic
Valve clearance - EXHAUST mm	Hydraulic

Engine oil & fluids

Engine oil

The Mazda MX-5 2.0 (2018–2023) takes 4.3 litres of engine oil with the filter.

See the reference table for the complete engine oil entries and their conditions.

Manual gearbox

The manual gearbox has a listed capacity of 2.0 litres. The specified oil is SAE 75W-90, with classification GL-4.

Coolant

The listed total cooling-system capacity is 6.0-6.2 litres.

See the reference table for the complete coolant entries and their conditions.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Preferred engine oil
Ambient temperature range	All temperatures
Engine oil grade SAE	0W-20, 5W-30
Engine oil options
Ambient temperature range	-30°C➞40°C
Engine oil grade SAE	0W-20
Engine oil classification API/ACEA	SL/A3, A5
Ambient temperature range	-30°C➞40°C
Engine oil grade SAE	5W-30
Engine oil classification API/ACEA	SL/A3, A5
Engine with filter(s) litres	4.3
Other lubricants and capacities
Manual transmission oil grade SAE	75W-90
Manual transmission oil classification	GL-4
Manual transmission litres	2.0
Automatic transmission fluid Type	JWS 3309
Automatic transmission (drain & refill) litres	7.2
Automatic transmission fluid - drain and refill
Differential oil classification - rear	Mazda long life hypoid SG1
Differential rear litres	0.6
Coolant Type	FL22
Coolant Colour	Green
Cooling system - total capacity litres	6.0-6.2
Brake fluid Type	DOT 3/4
Clutch fluid Type	DOT 3/4

Brakes & wear limits

Brake disc thickness

Brake discs on the Mazda MX-5 2.0 (2018–2023) are replaced at a minimum thickness of 20 mm (ventilated) or 20,8 mm (ventilated) front and 7,5 mm or 8,3 mm rear.

Minimum disc thickness for replacement - ventilated Front	20 mm
Minimum disc thickness after refacing - ventilated Front	20,8 mm
Minimum disc thickness for replacement Rear	7,5 mm
Minimum disc thickness after refacing Rear	8,3 mm

Brake disc and drum dimensions

Disc runout Front	0,04 mm
Minimum pad thickness Front	2 mm
Minimum pad thickness Rear	2 mm

Service & electrical

Tuning and emissions

Idle speed and ignition timing
Tuning conditions	—
Ignition timing - basic BTDC °Engine/rpm	15/710±50 Not adjustable
Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	710±50 Not adjustable
Idle speed - alternative rpm	AT=750±50 Not adjustable
Oil temperature °C	80
CO level at idle speed - tailpipe Vol. % CO	0,2 Max Not adjustable
HC level at idle speed ppm	100
CO2 level at idle speed Vol. % CO2	14,5-16
O2 level at idle speed Vol. % O2	0,1-0,5
Increased idle speed for CO test rpm	2500-3000
CO content at increased idle speed Vol. %	0,2
Lambda at increased idle λ	0,97-1,03

Starting and charging

Battery V/RC(Ah)	12 (60/65)

Service checks and adjustments

Oil pressure
Compression pressure bar	6,9-9,1
Oil pressure bar/rpm	1,1-1,7/1500
Radiator cap bar	0,93-1,22
Thermostat opens °C	86-90

Fuel system

Fuel feed/lift pump delivery pressure bar	4,3-5,0
Engine coolant temperature (ECT) sensor Ohm/°C	318/80
Injector Ohm	1,7-2,0

Spark plugs

Spark plugs Original equipment	Mazda
Spark plug Type	PE5R/S-18-110
Electrode gap mm	1,1-1,4

Tightening torques

Other engine tightening torques
Cylinder head instructions	—
View more information	—
Main bearings Stage 1	—
View more information	—
Install bedplate within 10 minutes.
Big end bearings Renew bolts/nuts	Yes
Big end bearings Stage 1	—
Big end bearings
Oil pump to cylinder block	23±3 Nm
Sump bolts	—
View more information	—
Assemble components within 10 minutes. Ensure sealant does not enter bolt holes.
Sump drain bolt	36±5 Nm
Flywheel/driveplate	—
Flywheel/drive plate
Clutch pressure plate	29±4 Nm
Crankshaft pulley/damper centre bolt	100±10 Nm+60°±5°
Camshaft carrier/cap	1)6 Nm 2)11 Nm
View more information	—
Camshaft carrier/cap
Camshaft/rocker cover	6±1 Nm
Inlet manifold to cylinder head	18±2 Nm
Exhaust manifold to cylinder head	—
Exhaust manifold to cylinder head
Exhaust downpipe to manifold	45±6 Nm
Water pump	23±3 Nm
Spark plugs	18±2 Nm
Fuel rail	23±3 Nm
Crankshaft position (CKP) sensor/engine speed (RPM) sensor	9±1 Nm
Camshaft position (CMP) sensor	9±1 Nm
Engine coolant temperature (ECT) sensor	20±3 Nm
Lambda sensor (Oxygen)	42±12 Nm
Knock sensor (KS)	20±3 Nm
Nitrogen oxide (NOx) sensor	42±12 Nm
Engine oil pressure switch	15±2 Nm
Oil filter	14±2 Nm
Chassis tightening torques
Front hub - wheel bearing housing bolts	130±6 Nm
Rear hub	—
Front/rear hub
Rear hub - wheel bearing housing bolts	130±6 Nm
Steering wheel	45±4 Nm
Steering rack/box mounting	90±14 Nm
Steering track rod end	75±7 Nm
Brake caliper to carrier Front	35±4 Nm
Brake caliper/carrier to hub Front	90±11 Nm
Brake caliper to carrier Rear	23±2 Nm
Brake caliper/carrier to hub Rear	59±7 Nm
ABS sensor Front	9±1 Nm
ABS sensor Rear	9±1 Nm
Road wheels	128±19 Nm

Air conditioning

Do not mix R134a with R1234yf.
No. of AC service connectors	2
Air conditioning restrictor type	Expansion valve
Compressor clutch/magnetic coupling	Yes
Compressor variable displacement solenoid	No
Air conditioning refrigerant Type	—
Air conditioning refrigerant quantity grams	—
Refrigerant quantity
Air conditioning oil Type	DH-PR YR20
Air conditioning oil quantity cm³	130±10

Frequently asked questions

What is the firing order of the Mazda MX-5 2.0?

The firing order for the Mazda MX-5 2.0 (2018–2023) is 1-3-4-2.

How much oil does the Mazda MX-5 2.0 take?

The Mazda MX-5 2.0 (2018–2023) takes 4.3 litres of engine oil with the filter. See the reference table for the complete engine oil entries and their conditions.

What are the valve clearances for the Mazda MX-5 2.0?

Valve clearances on the Mazda MX-5 2.0 (2018–2023) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the minimum brake disc thickness for the Mazda MX-5 2.0?

Brake discs on the Mazda MX-5 2.0 (2018–2023) are replaced at a minimum thickness of 20 mm (ventilated) or 20,8 mm (ventilated) front and 7,5 mm or 8,3 mm rear.