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.

DON'T MISS: Chevy Impala Natural-Gas Version Delayed By A Year Over Unspecified Concerns

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

2015 Chevrolet Impala Bi-Fuel Natural Gas

Deliveries of those cars was completed "months ago," and Chevy is now building 2016 models, a spokesperson said.

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

2015 Chevrolet Impala Bi-Fuel Natural Gas

All cars are built at the same Oshawa, Ontario, plant that builds most Impala models. They're then shipped to Michigan to be equipped with the natural-gas system by an aftermarket company.

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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