Mazda Cosmo Sport 110S, Full Specifications

Key Specifications

Spec	Series I (L10A)	Series II (L10B)
Production Years	1967-1968	1968-1972
Manufacturer	Toyo Kogyo Co., Ltd (Mazda)
Assembly	Hiroshima, Japan
Body Style	2-door coupe
Layout	Front engine, rear-wheel drive
Wheelbase	2,200 mm	2,350 mm
Overall Length	4,140 mm	4,140 mm
Overall Width	1,595 mm	1,595 mm
Overall Height	1,165 mm	1,165 mm
Kerb Weight	940 kg	960 kg
Fuel Tank Capacity	50 L	50 L
Drag Coefficient	~0.39	~0.39
Seating Capacity	2	2
Units Produced	343	833

Engine, Type 10A Twin-Rotor

Spec	L10A	L10B
Engine Type	Twin-rotor Wankel
Displacement	491cc x 2 = 982cc
Rotor Configuration	2-rotor, peripheral exhaust port
Rotor Dimensions	Generating radius: 105 mm
Eccentricity	15 mm
Compression Ratio	9.4:1	9.4:1
Power	110 PS (81 kW) @ 7,000 rpm	128 PS (94 kW) @ 7,000 rpm
Torque	130 Nm @ 3,500 rpm	142 Nm @ 5,000 rpm
Fuel System	Hitachi 4-barrel carburettor
Ignition	Contact breaker points, single distributor
Cooling	Water-cooled
Lubrication	Oil metering pump (apex seal lubrication)
Recommended Fuel	98 RON premium unleaded
Oil Capacity	~3.5 L
Redline	7,000 rpm

Transmission

Spec	L10A	L10B
Type	Manual	Manual
Gears	4-speed	5-speed
Final Drive	4.111	3.900
Clutch	Single dry plate

L10B Gear Ratios (5-speed)

Gear	Ratio
1st	3.500
2nd	2.170
3rd	1.419
4th	1.000
5th	0.829
Reverse	3.662

Suspension

Component	Front	Rear
Type	Independent, double wishbone	De Dion tube with trailing arms
Springs	Coil	Coil
Dampers	Telescopic hydraulic	Telescopic hydraulic
Anti-roll Bar	Yes	No

Brakes

Component	Front	Rear
Type	Disc	Drum
Diameter	254 mm	229 mm
Servo Assisted	Yes	Yes

Steering

Spec	Value
Type	Recirculating ball
Power Assist	No (manual)
Turns Lock-to-Lock	3.2
Turning Circle	9.4 m

Performance (Period Test Data)

Metric	L10A	L10B
0-100 km/h	~10.5 s	~8.8 s
0-400 m	~16.3 s	~15.8 s
Top Speed	185 km/h	200 km/h

Fuel Economy (Approximate)

Condition	L/100 km
City driving	18-22
Highway cruising	12-15
Mixed driving	15-18

Electrical

Spec	Value
Battery	12V, 36 Ah
Alternator	35A
Headlights	Sealed beam
Ignition System	12V coil, points and condenser

Wheels and Tyres

Spec	Value
Wheel Size	14” x 4.5” steel
Bolt Pattern	4 x 114.3
Tyre Size	155SR14

Exterior Colours (Factory)

The Cosmo Sport was offered in a limited range of colours:

Colour	Code
White	,
Red	,
Blue	,
Silver	,

Note: Factory colour documentation is limited. Custom colours may have been available on special order.

Interior

Spec	Value
Seats	Fixed-back bucket, vinyl upholstery
Dashboard	Moulded, full instrumentation
Instruments	Tachometer (central), speedometer, water temperature, oil pressure, fuel level, ammeter
Heating	Yes
Air Conditioning	No (not factory available)

Dimensions Detail

Measurement	L10A	L10B
Front Track	1,270 mm	1,270 mm
Rear Track	1,250 mm	1,250 mm
Ground Clearance	155 mm	155 mm
Front Overhang	830 mm	830 mm
Rear Overhang	1,110 mm	960 mm

Service Intervals (Recommended)

Service Item	Interval
Engine oil and filter	5,000 km or 3 months
Apex seal lubrication oil (metering pump)	Check level at every fuel fill
Spark plugs	10,000-15,000 km
Points and condenser	10,000 km or as needed
Coolant	24 months
Compression test	12 months or 10,000 km
Carburettor inspection	12 months
Brake fluid	24 months
Valve (port) clearance	Not applicable (rotary engine)

Production Summary

Detail	Value
Total Production	1,176 units
Series I (L10A)	343 units (1967-1968)
Series II (L10B)	833 units (1968-1972)
Market	Japan domestic only
Factory	Hiroshima, Japan
Original Price (Japan, 1967)	¥1,480,000 (L10A)
Original Price (Japan, 1968)	¥1,485,000 (L10B)