| GLC 200d (163 Hp) 4MATIC G-TRONIC | 163 hp | 43–45 mpg | 8.9 sec | 128 mph |
| GLC 200d (163 Hp) 4MATIC G-TRONIC | 163 hp | 44–45 mpg | 8.9 sec | 127 mph |
| GLC 220d (194 Hp) 4MATIC G-TRONIC | 194 hp | 43–45 mpg | 7.9 sec | 135 mph |
| GLC 220d (194 Hp) 4MATIC G-TRONIC | 194 hp | 44–45 mpg | 7.9 sec | 134 mph |
| GLC 200 (197 Hp) EQ Boost 4MATIC G-TRONIC | 197 hp | 32–33 mpg | 7.9 sec | 134 mph |
| GLC 200 (197 Hp) EQ Boost 4MATIC G-TRONIC | 197 hp | 31–33 mpg | 8.0 sec | 134 mph |
| F-CELL 13.5 kWh (211 Hp) 4MATIC | 211 hp | 153 MPGe | — | 99 mph |
| GLC 300d (245 Hp) 4MATIC G-TRONIC | 245 hp | 39–41 mpg | 6.6 sec | 145 mph |
| GLC 300d (245 Hp) 4MATIC G-TRONIC | 245 hp | 40–41 mpg | 6.5 sec | 144 mph |
| GLC 300 (255 Hp) 9G-TRONIC | 255 hp | 24 mpg | — | 130 mph |
| GLC 300 (258 Hp) EQ Boost 4MATIC G-TRONIC | 258 hp | 32–33 mpg | 6.2 sec | 149 mph |
| GLC 300 (258 Hp) EQ Boost 4MATIC G-TRONIC | 258 hp | 31–33 mpg | 6.3 sec | 149 mph |
| GLC 300de (306 Hp) Plug-in Hybrid 4MATIC 9G-TRONIC | 306 hp | 107–138 mpg | 6.2 sec | 143 mph |
| GLC 300de (306 Hp) Plug-in Hybrid 4MATIC 9G-TRONIC | 306 hp | 138 mpg | 6.2 sec | 143 mph |
| GLC 350e (315 Hp) Plug-in Hybrid 4MATIC 9G-TRONIC | 315 hp | 70 MPGe | 5.7 sec | 130 mph |
| GLC 300e (320 Hp) Plug-in Hybrid 4MATIC 9G-TRONIC | 320 hp | 124 mpg | 5.7 sec | 143 mph |
| GLC 300e (320 Hp) Plug-in Hybrid 4MATIC 9G-TRONIC | 320 hp | 87–107 mpg | 5.7 sec | 143 mph |
| GLC 400d (330 Hp) 4MATIC 9G-TRONIC | 330 hp | 34 mpg | 5.1 sec | 149 mph |
| GLC 400d (330 Hp) 4MATIC 9G-TRONIC | 330 hp | 34 mpg | 5.1 sec | 149 mph |
| AMG GLC 43 V6 (390 Hp) 4MATIC TCT | 390 hp | 22–23 mpg | 4.9 sec | 155 mph |
| AMG GLC 43 V6 (390 Hp) 4MATIC TCT | 390 hp | 22–23 mpg | 4.9 sec | 155 mph |
| AMG GLC 63 V8 (476 Hp) 4MATIC+ MCT | 476 hp | 19 mpg | 4.0 sec | 168 mph |
| AMG GLC 63 V8 (476 Hp) 4MATIC+ MCT | 476 hp | 19 mpg | 4.0 sec | 168 mph |
| AMG GLC 63 S V8 (510 Hp) 4MATIC+ MCT | 510 hp | 19 mpg | 3.8 sec | 174 mph |
| AMG GLC 63 S V8 (510 Hp) 4MATIC+ MCT | 510 hp | 19 mpg | 3.8 sec | 174 mph |