Oldsmobile Ninety-Eight MPG

Its best-rated version reaches 21 MPG combined in 1984 and 1996. Its weakest year peaked at 19 MPG (1992).

lowest to best versionbest versionmedian of its class

714.3 gal

a year at 15,000 miles for the best 1996 version. Put it next to its 1984 predecessor, at your own mileage.

The Oldsmobile Ninety-Eight has EPA ratings for six model years, 1984–1996, every one of them among large cars. Its best version had the highest combined rating among large cars in 1996, and it placed in its class top five in four model years. In 1996 it shared first place among 24 large cars with the Buick Park Avenue and the Oldsmobile Eighty-Eight.

The name disappeared from EPA's lists after 1984 and returned in 1992, 7 model years later. Of the 991 car nameplates on this site, few have had a diesel version (60 of them); this one has.

Among 24 large cars, 1996

The Ninety-Eight placed first (tied). It had the highest rating in the class, shared with the Buick Park Avenue and the Oldsmobile Eighty-Eight.

Powertrains under the name

Diesel
Rated in 1984.
Gasoline
Rated in 1984 and 1992–1996.

All 6 model years, best and lowest version

Model years	Best version	Combined	City / hwy	Lowest version	Versions
1996	Ninety-Eight	21	17 / 27	21	1
1995	Ninety-Eight	20	17 / 26	20	1
1993–1994	Ninety-Eight	20	17 / 25	18	2
1992	Ninety-Eight	19	16 / 24	18	2
1984	Ninety-Eight diesel	21	18 / 26	16	3

Same class, 1996

Buick Park Avenue21 MPG Oldsmobile Eighty-Eight21 MPG Pontiac Bonneville21 MPG Rolls-Royce Silver Spur Limousine12 MPG