The 2008 Infiniti M lineup gains a new all-wheel-drive model. These V6 and V8 sedans are the larger and costlier of Infiniti's two midsize cars. M35 has a 280-hp V6 and comes with rear-wheel drive or as the AWD M35x. M45 has a 335-hp V8. It, too, comes with rear drive and as the new-for-2008 AWD M45x. All Ms have a 5-speed automatic transmission. Available safety features include ABS, traction control, antiskid system, curtain side airbags, and front side airbags. Leather upholstery, heated and cooled front seats, sunroof, power tilt and telescopic steering wheel, and keyless entry and engine start are standard. Options on all include lane-departure warning, a heated power-reclining rear seat, and navigation system. Also available are DVD entertainment and a rearview camera. Steering-linked xenon headlamps are standard on M45.