GM 1.0 L ECOTEC L5Q / Opel B10XE

GM 1.0 L ECOTEC L5Q / Opel B10XEThe GM 1.0 L ECOTEC L5Q or Opel B10XE is a 1.0 l (999 cc, 60.96 cu-in) straight-three four-stroke natural aspirated gasoline small-displacement engine from the GM ECOTEC family.

The L5Q/B10XE engine uses a cast aluminum block with a cast-iron crankshaft and aluminum head with dual overhead camshafts (DOHC) and four valves per cylinder (12 valves in total). The engine is equipped with multipoint fuel injection (PFI), electronic throttle control, variable valve timing, two-stage variable-displacement oil pump.

A 74 mm (2.91 in) cylinder bore and 77.7 mm (3.06 in) piston stroke give the motor a total of 999 cc of displacement. Compression ratio rating is 10.5:1. The GM L5Q / Opel B10XE engine produces 75 PS (55 kW; 74 HP) at 6,500 rpm of maximum horsepower and 95 Nm (9.7 kg·m; 70.1 ft·lb) at 4,500 rpm of maximum torque. The redline is 6,500 rpm.

The breakdown of the engine code is as follows:

  • B – Euro 6 engine
  • 10 – 1.0 Liter displacement
  • X – Comression ratio from 10 to 11.5:1
  • E – Multi Point Fuel Injection system

General information

Engine Specifications
Engine codeGM 1.0 L ECOTEC L5Q / Opel B10XE
LayoutFour stroke, Inline-3 (Straight-3)
Fuel typeGasoline (petrol)
Displacement1.0 L, 999 cm3 (60.96 cu in)
Fuel systemMultipoint fuel injection (PFI)
Power adderNone
Power output75 PS (55 KW; 74 HP) at 6,500 rpm
Torque output95 Nm (9.7 kg·m; 70.1 ft·lb) at 4,500 rpm
Firing order1-2-3
Dimensions (L x W x H):

Cylinder block

The engine used a cast aluminum cylinder block, a cast-iron crankshaft, forged powdered metal connecting rods and low-friction PVD piston rings. Bore and stroke are 74 mm (2.91 in) and 77.7 mm (3.06 in), respectively. Compression ratio rating is 10.5:1.

Cylinder block
Cylinder block alloyCast aluminum
Compression ratio:10.5:1
Cylinder bore:74 mm (2.91 in))
Piston stroke:77.7 mm (3.06 in)
Number of piston rings (compression / oil):2 / 1

Cylinder head

The cylinder head is made of an aluminum alloy. The L5Q/B10XE engine has dual overhead camshafts with the variable valve timing system. The engine has a composite intake manifold and integrated into the cylinder head exhaust manifold. The engine uses hydraulic roller finger follower.

Maintenance data

Oil system
Oil consumption , L/1000 km (qt. per miles)up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil 0W-30, 0W-40, 5W-30, 5W-40, 10W-30, 10W-40
Oil type GM-LL-A-025
Engine oil capacity (Refill capacity) With filter change 3.5 l
Without filter change 3.3 l
Oil change interval, km (miles)15,000 (9,000)
Ignition system
Spark plugBosch

Vehicle applications

ModelYears Produced
Opel Karl2015-
Vauxhall Viva2015-
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

Be the first to comment

Leave a Reply

Your email address will not be published.