Engine & identification
Vehicle identification
| No. of cylinders Type | 4/DOHC |
|---|---|
| Capacity cc | 1759 |
| Compression ratio :1 | 14,8 |
| Fuel system Make | Denso |
Injection system
| Air metering Type | Mass/MAP |
|---|---|
| Fuel/injection pump assembly Make | Denso |
| Pump type | Common rail |
| Engine coolant temperature (ECT) sensor Ohm/°C | 622-703/60 |
Injection sequence
The injection sequence for the Mazda CX-3 1.8 (2018–2020) is 1-3-4-2.
| Injection sequence | 1-3-4-2 |
|---|
Valve clearances
Valve clearances on the Mazda CX-3 1.8 (2018–2020) 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 CX-3 1.8 (2018–2020) takes 5.1 litres of engine oil with the filter.
See the reference table for the complete engine oil entries and their conditions.
Manual gearbox
See the reference table for the complete manual gearbox entries and their conditions.
Transfer box
See the reference table for the complete transfer box entries and their conditions.
Coolant
The total cooling-system capacity entries are 6.6 litres without a stated condition; 6.8 litres for AT.
See the reference table for the complete coolant entries and their conditions.
Grades, filling conditions and capacities
| Preferred engine oil | |
|---|---|
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | — |
| Engine oil options | |
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | 0W-30 |
| Engine oil classification API/ACEA | /C3 |
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | 5W-30 |
| Engine oil classification API/ACEA | /C3 |
| Engine with filter(s) litres | 5.1 |
| Other lubricants and capacities | |
| Manual transmission oil grade SAE | Mazda Long Life Gear Oil G7 |
| Manual transmission oil | |
| Manual transmission litres | 1.7 |
| Automatic transmission fluid Type | ATF FZ |
| Automatic transmission (drain & refill) litres | 3.3 |
| View more information | — |
| Automatic transmission (dry fill) litres | 7.8 |
| Differential oil classification - rear | Mazda long life hypoid gear oil SG1 |
| Differential rear litres | 0.35 |
| Transfer box oil classification | Mazda long life hypoid gear oil SG1 |
| Transfer box litres | 0.4 |
| Coolant Type | FL22 |
| Coolant Colour | Green |
| Cooling system - total capacity litres | 6,6 AT=6,8 |
| Cooling system | |
| Brake fluid Type | DOT 3/4 |
| Clutch fluid Type | DOT 3/4 |
Brakes & wear limits
Brake disc thickness
Brake discs on the Mazda CX-3 1.8 (2018–2020) are replaced at a minimum thickness of 23 mm (ventilated) or 23,8 mm (ventilated) front and 8,3 mm or 7,5 mm rear.
| Minimum disc thickness for replacement - ventilated Front | 23 mm |
|---|---|
| Minimum disc thickness after refacing - ventilated Front | 23,8 mm |
| Minimum disc thickness for replacement Rear | 8,3 mm |
| Minimum disc thickness after refacing Rear | 7,5 mm |
Brake disc and drum dimensions
| Disc runout Front | 0,04 mm |
|---|---|
| Disc runout Rear | 0,1 mm |
| Minimum pad thickness Front | 2 mm |
| Minimum pad thickness Rear | 2 mm |
| Parking brake travel No. of notches | 2-3 |
Service & electrical
Glow plugs
Glow plugs for the Mazda CX-3 1.8 (2018–2020): Original equipment NGK, Beru GN1012, Champion CH931 and NGK 93218.
| Glow plug nominal rating V/A | 7,0 |
|---|---|
| Glow plug - part no. Original equipment | NGK |
| Glow plug - part no. Beru | GN1012 |
| Glow plug - part no. Champion | CH931 |
| Glow plug - part no. NGK | 93218 |
Tuning and emissions
| Idle speed rpm | 800±50 |
|---|
Starting and charging
| Battery V/RC(Ah) | 12 |
|---|
Service checks and adjustments
| Compression pressure bar | 18,0-23,5 |
|---|---|
| Oil pressure bar/rpm | 1,1-1,8/1500 |
| Oil pressure | |
| Radiator cap bar | 0,93-1,23 |
Tightening torques
| Cylinder head instructions | — |
|---|---|
| Cylinder head | |
| Maximum bolt length | 146,5 mm |
| Tighten | 15±2 Nm |
| Tighten | 25±2 Nm |
| Tighten | 90°±5° |
| Tighten | 90°±5° |
| Tighten | 90°±5° |
| Other engine tightening torques | |
| Main bearings Renew bolts/nuts | Yes |
| Main bearings Stage 1 | — |
| View more information | — |
| Install bedplate within 10 minutes. | |
| Big end bearings Stage 1 | — |
| View more information | — |
| Big end bearings | |
| Oil pump to cylinder block | 23±3 Nm |
| Sump drain bolt | 36±5 Nm |
| Flywheel/driveplate | — |
| Flywheel/driveplate | |
| Clutch pressure plate | 29±4 Nm |
| Crankshaft pulley/damper centre bolt | 100 Nm+69°±2° |
| Camshaft sprocket/gear | 132±8 Nm |
| Camshaft carrier/cap | 1)6 Nm 2)11 Nm |
| View more information | — |
| Assemble components within 10 minutes. Excess sealant can cause engine damage. | |
| Camshaft/rocker cover | — |
| View more information | — |
| Assemble components within 10 minutes. | |
| Inlet manifold to cylinder head | 18±2 Nm |
| Exhaust downpipe to manifold | 45±6 Nm |
| Water pump | 10±1 Nm |
| Injector/clamp | 3 Nm+120°±3° |
| Injector pipe unions | 37±5 Nm |
| Fuel/injection pump mounting | 23±3 Nm |
| Glow plugs | 18±2 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 |
| Nitrogen oxide (NOx) sensor | 50±10 Nm |
| Engine oil pressure switch | 16±2 Nm |
| Oil filter | 18±2 Nm |
| Chassis tightening torques | |
| Front hub | — |
| Front/rear hub | |
| Front hub - wheel bearing housing bolts | 94±8 Nm |
| Rear hub | — |
| Rear hub - wheel bearing housing bolts | 124±12 Nm |
| Steering wheel | 48±6 Nm |
| Steering rack/box mounting | 90±14 Nm |
| Steering track rod end | 53±6 Nm |
| Steering track rod end | |
| Brake caliper to carrier Front | 28±2 Nm |
| Brake caliper/carrier to hub Front | 101±9 Nm |
| Brake disc to hub Rear | 12±2 Nm |
| Brake caliper to carrier Rear | 35±3 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
| 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 | — |
| Do not mix R134a with R1234yf. | |
| Air conditioning refrigerant quantity grams | — |
| Air conditioning oil Type | — |
| Air conditioning oil quantity cm³ | — |
Frequently asked questions
What is the injection sequence of the Mazda CX-3 1.8?
The injection sequence for the Mazda CX-3 1.8 (2018–2020) is 1-3-4-2.
What glow plugs does the Mazda CX-3 1.8 use?
Glow plugs for the Mazda CX-3 1.8 (2018–2020): Original equipment NGK, Beru GN1012, Champion CH931 and NGK 93218.
How much oil does the Mazda CX-3 1.8 take?
The Mazda CX-3 1.8 (2018–2020) takes 5.1 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 CX-3 1.8?
Valve clearances on the Mazda CX-3 1.8 (2018–2020) are hydraulic — they self-adjust, so no manual clearance figure applies.
What is the minimum brake disc thickness for the Mazda CX-3 1.8?
Brake discs on the Mazda CX-3 1.8 (2018–2020) are replaced at a minimum thickness of 23 mm (ventilated) or 23,8 mm (ventilated) front and 8,3 mm or 7,5 mm rear.