Key Specifications

Spec	Value
Production Years	1970--1977 (A20), 1977--1981 (A40/A50)
Manufacturer	Toyota Motor Corporation
Assembly	Tahara, Aichi, Japan
Body Styles	2-door hardtop coupe, 3-door liftback
Layout	Front engine, rear-wheel drive
Platform	A20 (first gen), A40/A50 (second gen)
Construction	Steel monocoque (unibody)

Dimensions -- First Generation (A20)

Dimension	Coupe	Liftback
Wheelbase	2,425 mm (95.5 in)	2,425 mm (95.5 in)
Overall Length	4,165 mm (164.0 in)	4,230 mm (166.5 in)
Overall Width	1,600 mm (63.0 in)	1,600 mm (63.0 in)
Overall Height	1,310 mm (51.6 in)	1,310 mm (51.6 in)
Kerb Weight (18R)	1,020 kg (2,249 lb)	1,060 kg (2,337 lb)
Kerb Weight (18R-G)	1,040 kg (2,293 lb)	1,080 kg (2,381 lb)
Fuel Tank Capacity	55 L (12.1 imp gal)	55 L (12.1 imp gal)
Boot/Cargo Capacity	300 L (coupe)	540 L (liftback, seats folded)

Dimensions -- Second Generation (A40)

Dimension	Coupe	Liftback
Wheelbase	2,500 mm (98.4 in)	2,500 mm (98.4 in)
Overall Length	4,410 mm (173.6 in)	4,435 mm (174.6 in)
Overall Width	1,635 mm (64.4 in)	1,635 mm (64.4 in)
Overall Height	1,305 mm (51.4 in)	1,310 mm (51.6 in)
Kerb Weight (18R)	1,080 kg (2,381 lb)	1,110 kg (2,447 lb)
Kerb Weight (18R-G)	1,100 kg (2,425 lb)	1,130 kg (2,491 lb)
Fuel Tank Capacity	55 L (12.1 imp gal)	55 L (12.1 imp gal)

Engine Specifications

2T-G -- 1588cc DOHC (First Gen, Some Markets)

Spec	Value
Configuration	Inline 4, DOHC, 8-valve
Displacement	1,588 cc
Bore x Stroke	85.0 mm x 70.0 mm
Compression Ratio	9.8:1
Power	85 kW (115 hp) @ 6,400 rpm
Torque	142 Nm (105 lb-ft) @ 5,200 rpm
Fuel System	Twin Mikuni-Solex side-draft carburettors
Ignition	Contact breaker points / electronic (late)
Valvetrain	Chain-driven DOHC, mechanical lifters
Oil Capacity	3.5 L (with filter)
Recommended Oil	20W-50 mineral
Redline	7,200 rpm

18R -- 1968cc SOHC (Australian Market Standard)

Spec	Value
Configuration	Inline 4, SOHC, 8-valve
Displacement	1,968 cc
Bore x Stroke	88.5 mm x 80.0 mm
Compression Ratio	8.5:1
Power	72 kW (97 hp) @ 5,500 rpm
Torque	157 Nm (116 lb-ft) @ 3,600 rpm
Fuel System	Single Aisan 2-barrel downdraft carburettor
Ignition	Contact breaker points / electronic (late)
Valvetrain	Chain-driven SOHC, mechanical lifters
Oil Capacity	4.0 L (with filter)
Recommended Oil	20W-50 mineral
Redline	6,500 rpm

18R-G -- 1968cc DOHC (Performance Model)

Spec	Value
Configuration	Inline 4, DOHC, 8-valve
Displacement	1,968 cc
Bore x Stroke	88.5 mm x 80.0 mm
Compression Ratio	9.8:1
Power	82 kW (110 hp) @ 6,400 rpm
Torque	162 Nm (120 lb-ft) @ 5,200 rpm
Fuel System	Twin Mikuni-Solex PHH side-draft carburettors
Ignition	Contact breaker points / electronic (late)
Valvetrain	Chain-driven DOHC, mechanical lifters
Oil Capacity	4.0 L (with filter)
Recommended Oil	20W-50 mineral
Redline	7,200 rpm

18R-GU -- 1968cc DOHC EFI (Late Second Gen, Some Markets)

Spec	Value
Configuration	Inline 4, DOHC, 8-valve
Displacement	1,968 cc
Bore x Stroke	88.5 mm x 80.0 mm
Compression Ratio	9.8:1
Power	82 kW (110 hp) @ 6,000 rpm
Torque	167 Nm (123 lb-ft) @ 4,800 rpm
Fuel System	Electronic fuel injection (EFI)

Transmission Options

Transmission	Type	Gears	Applications
Toyota W50	Manual	5-speed	Most models (standard)
Toyota W40	Manual	4-speed	Base models (early)
Toyota A40	Automatic	3-speed	Optional

W50 Gear Ratios (5-Speed Manual)

Gear	Ratio
1st	3.587
2nd	2.022
3rd	1.384
4th	1.000
5th	0.861
Reverse	4.039

W40 Gear Ratios (4-Speed Manual)

Gear	Ratio
1st	3.587
2nd	2.022
3rd	1.384
4th	1.000
Reverse	4.039

Final Drive Ratios

Model	Ratio
18R (manual)	3.909
18R-G (manual)	3.727
18R (automatic)	3.909

Differential

Spec	Value
Type	Open (standard); optional limited-slip on GT models

Suspension

First Generation (A20)

Component	Front	Rear
Type	Independent, MacPherson strut	Live axle, 4-link
Springs	Coil	Coil
Dampers	Telescopic hydraulic	Telescopic hydraulic
Anti-roll Bar	Yes (GT models standard; optional on others)	No (standard); optional on GT

Second Generation (A40)

Component	Front	Rear
Type	Independent, MacPherson strut	Live axle, 4-link
Springs	Coil	Coil
Dampers	Telescopic hydraulic	Telescopic hydraulic
Anti-roll Bar	Yes (standard on most)	Yes (GT models)

Brakes

First Generation

Component	Front	Rear
Type	Solid disc	Drum
Disc Diameter	246 mm (9.7 in)	--
Drum Diameter	--	228 mm (9.0 in)
Servo Assisted	Yes	--
ABS	Not available	--

Second Generation

Component	Front	Rear
Type	Ventilated disc (GT) / solid disc (ST)	Drum
Disc Diameter	254 mm (10.0 in)	--
Drum Diameter	--	228 mm (9.0 in)
Servo Assisted	Yes	--
ABS	Not available	--

Steering

Spec	First Gen	Second Gen
Type	Recirculating ball	Recirculating ball / Rack and pinion (late)
Power Assist	Optional (rare)	Optional
Turns Lock-to-Lock	3.6	3.4
Turning Circle	10.0 m	10.2 m

Performance (Approximate, Period Road Tests)

Model	0--60 mph	0--100 km/h	Quarter Mile	Top Speed
18R (single-cam, manual)	12.0 s	12.8 s	18.2 s	170 km/h (106 mph)
18R-G (twin-cam, manual)	9.5 s	10.2 s	17.0 s	190 km/h (118 mph)
2T-G (twin-cam, manual)	10.0 s	10.7 s	17.5 s	185 km/h (115 mph)
18R (automatic)	14.5 s	15.5 s	19.5 s	160 km/h (99 mph)

Fuel Economy (Approximate, Mixed Driving)

Model	L/100 km	mpg (imperial)
18R (single-cam)	10.0	28
18R-G (twin-cam)	11.0	26
2T-G (twin-cam)	9.5	30
18R (automatic)	12.0	24

Tyre Specifications

Generation	Standard	Optional
First gen (A20)	175SR13	185/70R13
Second gen (A40)	175/70R13	185/70R14

Wheel Specifications

Spec	Value
Standard (A20)	13" x 5" steel
Optional (A20 GT)	13" x 5.5" alloy
Standard (A40)	13" x 5" steel or 14" x 5.5" steel
Optional (A40 GT)	14" x 5.5" alloy
Bolt Pattern	4 x 114.3

Electrical

Spec	Value
System	12V negative earth
Battery	12V, 50 Ah
Charging	Alternator, 40--55A
Headlights	Round sealed beam (A20), rectangular (A40)

Service Intervals

Service Item	Interval
Engine oil and filter	5,000--7,500 km or 6 months
Valve clearance adjustment	20,000 km
Contact breaker points (pre-electronic)	10,000 km
Spark plugs	20,000 km
Air filter	20,000 km
Timing chain inspection	80,000 km
Coolant	24 months
Brake fluid	24 months
Gearbox oil	40,000 km
Differential oil	40,000 km
Carburettor service	20,000 km
Twin carburettor synchronisation (18R-G)	10,000 km

Model Variants

First Generation (A20, 1970--1977)

ST (18R Single-Cam)

Spec	Value
Engine	18R (1,968cc SOHC)
Power	72 kW (97 hp)
Equipment	Standard trim, 5-speed manual

GT (18R-G Twin-Cam)

Spec	Value
Engine	18R-G (1,968cc DOHC)
Power	82 kW (110 hp)
Equipment	Sport trim, twin carburettors, alloy wheels, LSD (optional)

GT (2T-G Twin-Cam, Some Markets)

Spec	Value
Engine	2T-G (1,588cc DOHC)
Power	85 kW (115 hp)
Equipment	Sport trim, twin carburettors

Second Generation (A40/A50, 1977--1981)

ST (18R Single-Cam)

Spec	Value
Engine	18R (1,968cc SOHC)
Power	72 kW (97 hp)
Equipment	Standard trim

GT (18R-G/18R-GU Twin-Cam)

Spec	Value
Engine	18R-G (1,968cc DOHC, carburettor) or 18R-GU (EFI)
Power	82 kW (110 hp)
Equipment	Sport trim, alloy wheels, upgraded brakes

Production Numbers (Worldwide, Approximate)

Generation	Units
First generation (A20, all variants)	~1,000,000
Second generation (A40/A50, all variants)	~850,000
Total	~1,850,000