BEV vs. ICE at Streets

Motor Trend - - Feature - Kim Reynolds

This graph pro­vides a les­son about the im­por­tance of tire grip. De­spite the huge ad­van­tage ex­it­ing cor­ners that all-wheeldrive trac­tion should give the I-pace and Model 3, the Alfa is re­peat­edly faster on the straight­aways with its mere rear-wheel drive. That’s de­spite a 0–60 time that’s 0.5 sec­ond slower than the Tesla’s.

When it comes to lap­ping, the three most im­por­tant things are tires, tires, and, oh yes, tires. The Alfa’s grip makes it the lat­eral-g champ in ev­ery cor­ner. But its real div­i­dends ap­pear later in cor­ner exit, where the AWD cars dis­play pe­ri­odic un­der­steer, forc­ing Randy to briefly back off. A no­table Tesla gain, though, ap­pears in how much speed it’s hold­ing head­ing into Turn 10 (a gam­bit Randy over­played in a later lap­ping ses­sion, go­ing off in Turn 11 due to both this speed and a mis­cue with its brakes).

Two tidbits about the Tesla’s lap­ping: Even while it’s clock­ing a lap time that beats the Mus­tang GT PP2’S, its en­ergy use was an as­ton­ish­ing 17 mpg-e (elec­tric­ity use if it were an equiv­a­lent num­ber of gal­lons of gas). And its brakes are slightly less stressed by Track mode’s stronger re­gen­er­a­tive set­ting, tak­ing up the slack.

AL­PHA ROMEO The Alfa Romeo Gi­u­lia and its in­ter­nal com­bus­tion V-6 hold on to the top spot—for now—but the BEV be­tas and gam­mas are clos­ing in.

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