After a long delay, the 2015 Chevrolet Impala bi-fuel natural-gas sedan is finally reaching customers.
The car--which can run on either compressed natural gas (CNG) or gasoline--was first shown in October 2013.
General Motors originally said it would put the Impala bi-fuel on sale by summer 2014, but the first deliveries didn't take place until over a year after that.
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As 2015 draws to a close, Chevy has delivered around 200 bi-fuel Impalas, reports The Detroit News.
The carmaker delayed delivery of the first 2015 Impala bi-fuel sedans due to quality concerns.
After building about 200 cars, it held deliveries until an unspecified quality issue was addressed.

2015 Chevrolet Impala Bi-Fuel Natural Gas
So far, most cars have been purchased by commercial and fleet customers.
The 2015 models carry a base price of $38,210, including destination.
ALSO SEE: Natural-Gas Powered 2015 Chevy Impala To Start At $38,210 (May 2014)
The bi-fuel model includes complete fuel systems for both gasoline and CNG, with a 7.8-gallon steel tank mounted in the trunk to store the compressed gas.
It shares a 3.6-liter V-6 with other Impala models, but with hardened valves and valve seats for better durability when used with CNG.
On natural gas, the Impala has an EPA-rated range of 119 miles. It has a range of 487 miles on both natural gas and gasoline.

2015 Chevrolet Impala Bi-Fuel Natural Gas
After that, the cars are shipped to GM's Detroit-Hamtramck assembly plant for final delivery to customers.
MORE: 2015 Chevrolet Impala To Be Offered As Bi-Fuel Model With Natural-Gas Tank (Oct 2013)
With the departure of the Honda Civic Natural Gas, the Impala essentially has no competition--other than an array of work trucks and vans.
GM originally said it planned to sell 1,000 Impala bi-fuel sedans in the first year.
It plans to offer the model through 3,200 Chevy dealerships nationwide.
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