The new MIDC range figure remains above Tata’s C75 range test results.
Tata Motors has updated the range figures for its electric vehicle (EV) lineup following new testing guidelines introduced by India’s Ministry of Road Transport and Highways (MoRTH), which now include additional parameters in the Modified Indian Driving Cycle (MIDC). Previously, the MIDC range was calculated based only on urban driving scenarios. However, the Ministry now requires car manufacturers to incorporate both Urban and extra-urban cycles into their range calculations, with the inclusion of highway driving in the MIDC range, where the average testing speed has increased from 19 kph to 31 kph and the maximum speed from 50 kph to 90 kph, the reported range figures for EVs have decreased. This drop is typical as EVs generally show lower range performance on highway cycles compared to city conditions.
The provided table contrasts the earlier and updated MIDC range figures and also includes data from Tata Motor’s proprietary C75 test cycle. This cycle, claimed by Tata to reflect near-real-world conditions that 75 per cent of drivers might achieve, involves testing at higher speeds (average 40 kph, maximum 120 kph), with the air conditioning on, increased load capacity (up to 250kg versus the MIDC’s 150kg), and a broader temperature range (10-40 degrees Celsius, compared to 20-30 degrees Celsius in the MIDC tests).
Despite these rigorous conditions, the C75 range test results still do not align with those from Autocar India’s assessments. For instance, in our preliminary highway tests, the extended range Curvv EV 55 model managed 359 km on a single charge, noticeably below Tata’s advertised 400-425 km range.
It is expected that other car manufacturers will soon announce their revised MIDC range figures as they adapt to the new testing requirements.
