Notice how the 2007 Aura Hybrid 2.4 has its own engine code - LAT - that is not the same as any other 2.4 engine.
Also, notice that the 4speed auto transmission used with this engine also has its own unique engine code There is no question the 2.4 Hybrid has it's own engine code. It's got a giant generator affixed to the side of it.

But, it is the same lastest Ecotec 2.4 VVT.
Look down to the 2.4 ecotec engines (and past the listings for the Hybrid 2.4 Ecotec engines that are not the same) and look for the first Malibu listing:This what I see as per this link.
ECOTEC 2.4L I 4 VVT (LE5)
Chevrolet Cobalt P PL
SS WN Hydra-Matic 4T45 (MN5) FWD P SS WN Getrag F23/5 (M86) P SS WN
ECOTEC 2.4L I 4 VVT (LE5)
Chevrolet Malibu P PL
SS WN Hydra-Matic 6T40 (MH8) P SS WN
ECOTEC 2.4L I 4 VVT (LE5)
Chevrolet Malibu P PL
SS WN Hydra-Matic 4T45 (MN5) FWD P SS WN ECOTEC 2.4L I 4 VVT (LE5)
Pontiac G6 (4DrNB) P PL
SS WN Hydra-Matic 4T45 (MN5) FWD P SS WN
ECOTEC 2.4L I 4 VVT (LE5)
Pontiac G5 P PL
SS WN Hydra-Matic 4T45 (MN5) FWD P SS WN Getrag F23/5 (M86) P SS WN
ECOTEC 2.4L I 4 VVT (LE5)
Pontiac Solstice P PL
SS WN Hydra-Matic 5L40 (M82) RWD P SS WN Aisin AR5 (MA5) P SS WN
ECOTEC 2.4L I 4 VVT (LE5) Saturn Sky P PL
SS WN Hydra-Matic 5L40 (M82) RWD P SS WN Aisin AR5 (MA5) P SS WN
ECOTEC 2.4L I 4 VVT (LE5)
Saturn Aura P PL
SS WN Hydra-Matic 4T45 (MN5) FWD P SS WN
The
Hydra-Matic 6T40 (MH8) is the 6 speed. So what

It's going into the 4 cylinder LTZ model at a price point nobody will buy. That we have already discussed.
The facts are that the 2008 Malibu is getting the same 4 speed transmission that they use in a gazillion cars already. The facts are that the 4 cylinder engine used in the 2008 Malibu is the same ECOTEC 2.4 VVT that they already use in a gazillion cars including some Cobalts. The facts are that in 2007 the Aura "hybrid", was powered by the same ECOTEC 2.4 VVT and the tranny was the same 4T45 4 speed auto.
In conclusion, the powertrain in the 2008 Malibu 4 banger is no different than one would find in a Cobalt Sport. It is NO segment buster.
OVER AND OUT
New Applications in 2008 Chevrolet Malibu and Saturn Aura and VUE
The Ecotec 2.4L VVT powers the new Chevrolet Malibu sedan and initially begins the model year mated with the Hydra-Matic 4T45 (MN5) four speed FWD automatic transmission and then midway through the model year is mated to the new Hydra-Matic 6T40 (MH8) six-speed FWD automatic transmission. The Saturn Aura is also a new application for 2008 model year and is equipped with the 4T45 (MN5) transmission. Carryover applications which use the Ecotec 2.4L I4 VVT ( LE5 ) include: Chevrolet Cobalt, Pontiac G5, G6, all mated to the 4T45 (MN5) transmission, and an available Getrag F23 (M86) five-speed manual transmission available on the Cobalt and G5. The Pontiac Solstice, and Saturn Sky, use the Hydra-Matic 5L40 (M82) five-speed automatic RWD transmission or the Aisin AR5 five-speed manual transmission. In the Truck Portfolio, the Ecotec 2.4L I4 VVT (LE5) is a new application for the new design Saturn VUE, and along with the Chevrolet HHR Passenger and Panel vans, use the the 4T45 (MN5 ) four-speed FWD automatic transmission