59 D40LF's were delivered in 2000, #s 4175-4233. These buses differed slightly from the earlier models: the rear panels were flat rather than ribbed, the interior lighting was mounted below the ad panels rather than above, and they were also the first to include a rear-facing wheelchair position on the operator's side. They retained the Cummins ISC engines and Allison B400R5 transmissions however. Almost all of these buses had their interiors updated with blue ETS insignia seat inserts. Many also had Cummins ISL engines installed in place of the original ISC. #s 4175, 4176, 4210, 4223, and 4224 were prototypes for onboard camera systems (this system only included two cameras instead of the now standard five), and #s 4215, 4217, 4218, 4221, and 4222 received upgraded particulate filters. All units were equipped with Smartbus GPS & stop announcement systems in 2016, in addition to interior and exterior camera retrofits in 2019. #4195 was the first unit retired (October 2017). A handful of others were retired in 2019. The remaining two thirds of the fleet were parked in mid-March 2020 due to Covid-19 pandemic service reductions and the buses' lack of driver shields. By the time regular service resumed in September 2020, these buses were all marked as surplus and retired, having been replaced by the 2019-20 XD40's (#'s 7110-7201).

 

Units 4175-4180	Units 4181-4190	Units 4191-4200	Units 4201-4210	Units 4211-4220
		Units 4221-4233