fuel-efficient car
becoming fuel-efficient
fuel-efficient engine
highly fuel-efficient
fuel-efficient design
driving fuel-efficiently
fuel-efficient vehicles
was fuel-efficient
more fuel-efficient
fuel-efficient technology
we need a fuel-efficient car to save money on gas.
the new hybrid is remarkably fuel-efficient.
driving style significantly impacts fuel-efficient performance.
the company is developing fuel-efficient engine technology.
a fuel-efficient engine can reduce your carbon footprint.
we compared several fuel-efficient models before making a decision.
the goal is to create more fuel-efficient transportation options.
regular maintenance helps maintain fuel-efficient operation.
the fuel-efficient design contributes to lower running costs.
investing in a fuel-efficient vehicle is a smart choice.
the government offers incentives for fuel-efficient vehicles.
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