Collocations for efficiency - noun

ruthless
great, high
attempts to achieve greater efficiency in the production process

improved, increased
increasing
maximum, peak (esp. AmE)
The optimum design allows bartenders to work at peak efficiency.

low
reduced
overall
relative
cost
energy, fuel, thermal
mental, physical
administrative, business, economic, industrial, management, mechanical, operational, organizational, production, technical

achieve
maintain
demonstrate, show
bring, create, deliver, offer, provide
The Internet's promise to bring more efficiency to the distribution chain is still materializing.

boost, enhance, gain, improve, increase, promote
maximize
decrease, reduce
lose
assess, calculate, determine, estimate, evaluate, examine, measure, test

drive (esp. BrE), measures
New procedures had been introduced as part of an efficiency drive.

benefits, gains, improvements, increases, savings
the efficiency gains resulting from improved technology

losses
levels, standards
We have failed to improve fuel efficiency standards.

rating, score
expert (esp. AmE)

with efficiency
The uprising was put down with ruthless efficiency.

efficiency in
greater efficiency in energy use