Question: The B-series automotive engines are sold concurrently with an engine used in the first-generation of what?

EcoDiesel is an engine used in the Ram 1500 since 2014, as well as in the Jeep Grand Cherokee.  Approximately 20% of 2015 RAM 1500s are equipped with the engine, mostly ones sold in Europe.  FCA uses the EcoDiesel name for two different engines.  One is the VM Motori A 630 DOHC 3.0L engine used in the Grand Cherokee, and Ram.  The other is a Fiat 3.0L diesel used in the Ram ProMaster. <SEP>  Sold concurrently with the D-series which were primarily SOHC engines designed for more economical applications, the B-series were aimed more as a performance option featuring dual and single-overhead cams along with the first application of Honda's VTEC system (available in some models).  To identify a Honda B-series engine, the letter B is normally followed by two numbers to designate the displacement of the engine, another letter, and in US-spec engines, another number.  The Japanese spec-engines are normally designated with a four character alphanumeric designation.  The B-series, the B20B variant in particular, is not to be confused with the earlier Honda B20A engine introduced in 1985 and primarily available in the Prelude and Accord-derived vehicles from 1985-1991. The B-series are a family of inline four-cylinder DOHC/SOHC automotive engines introduced by Honda in 1989.  While sharing some design elements and both being multivalve Honda four-cylinders, the B-series and B20A differ substantially in architecture, enough to be considered distinct engine families. <SEP> The Honda Rafaga series CE4 and CE5 was a compact 4-door sedan sold only in Japan by Honda, introduced in January 1993, and used the same 5-cylinder engine that was used in the Honda Inspire and the Honda Vigor and shared a platform with the second generation CE series Honda Ascot.  "Rafaga" is Spanish for "gust" or "blustery".  The engine is installed longitudinally, the same configuration used in the Vigor and Inspire.  The Rafaga was third in Hondas hierarchy of sedans, and a sister car to the Ascot, which was sold at the "Honda Primo" dealership network.  The Rafaga was sold in Japan at "Honda Verno" dealerships, and was one level up from the Honda Integra.  As with other Honda products, the Rafaga used double wishbone suspension at the front and rear wheels.  The "2.5 S" trim level came with a front suspension upper strut brace in the engine compartment.  In Japan, the smaller G20A engine used regular grade fuel, while the larger G25A engine used premium grade fuel. <SEP>  Engine displacement ranges between 1.2 and 1.7 liters.  The D Series engine is either SOHC or DOHC, and might include VTEC variable valve timing. The Honda D series inline-four cylinder engine is used in a variety of compact models, most commonly the Honda Civic, CRX, Logo, Stream, and first-generation Integra.  Power ranges from 62 hp in the Logo to 130 PS in the Civic Si.  D-series production commenced 1984 and ended 2005.  D-series engine technology culminated with production of the D15B 3-stage VTEC (D15Z7) which was available in markets outside of the United States.  Earlier versions of this engine also used a single port fuel injection system Honda called PGM-CARB, signifying the carburetor was computer controlled.