I did a bit of math, and here is what the report says the following technologies are worth MPG wise.
Code:
Low Viscosity Lubricants ...................... $6 .......... $12.00 ... 0.5%
VVT-Coupled Cam Phasing (CCP), OHV ............ $53 ......... $21.00 ... 2.5%
Variable Stroke HVAC .......................... $80 ......... $22.86 ... 3.5%
Turbocharging and Downsizing .................. $129 ........ $25.80 ... 5.0%
Low Rolling Resistance Tires .................. $40 ......... $26.67 ... 1.5%
Aerodynamics 5%-10% ........................... $45 ......... $30.00 ... 1.5%
Electric/Hydraulic Power Steering ............. $95 ......... $31.67 ... 3.0%
Valve Event Manipulation ...................... $52 ......... $34.67 ... 1.5%
7 Speed Transmission .......................... $235 ........ $39.17 ... 6.0%
VVT-Coupled Cam Phasing (CCP), SOHC ........... $105 ........ $42.00 ... 2.5%
VVT-Dual Cam Phasing (DCP) .................... $105 ........ $46.67 ... 2.25%
Dual Clutch Transmission ...................... $350 ........ $46.67 ... 7.5%
Continuous Variable Transmission .............. $207 ........ $51.63 ... 4.0%
8 Speed Transmission .......................... $425 ........ $60.71 ... 7.0%
Valve Event Manipulation (Variable Value Lift) . $760 ........ $69.09 ... 11.0%
VVT-Intake Cam Phasing (ICP) .................. $105 ........ $70.00 ... 1.5%
Cylinder Deactivation, OHV .................... $353 ........ $70.50 ... 5.0%
Engine Friction Reduction ..................... $95 ......... $75.60 ... 1.25%
Continuously Variable Valve Lift (CVVL) ....... $450 ........ $90.00 ... 5.0%
Mass Reduction 5% ............................. $297 ........ $91.38 ... 3.25%
Mass Reduction 10% ............................ $713 ........ $109.69 ... 6.5%
Cylinder Deactivation, SOHC ................... $555 ........ $111.00 ... 5.0%
Full Hybrid ................................... $6,000 ...... $127.66 ... 47.0%
Discrete Variable Valve Lift (DVVL), SOHC/DOHC . $293 ........ $130.00 ... 2.25%
Mass Reduction 20% ............................ $1,600 ...... $133.33 ... 12.0%
Stoichiometric Gasoline Direct Injection (GDI) . $319 ........ $141.78 ... 2.0%
Conversion from SI to CI ...................... $5,900 ...... $159.46 ... 37.0%
Stop/Start Hybrid ............................. $885 ........ $221.25 ... 4.0%