Bajaj CNG Bike vs Honda SP 125
Prices ex-showroom Delhi, checked 2026-09. On-road and running costs estimated for Delhi.
Bajaj CNG Bike and Honda SP 125 are from different segments and turn up together on most shortlists. The SP 125 undercuts the CNG Bike by ₹13,601, a gap big enough to notice on the EMI but not to decide the argument on its own.
The SP 125 takes 3 of the 6 categories we score, so this is close and comes down to what you weight. Our overall ratings are 6.5/10 for the CNG Bike and 6.5/10 for the SP 125.
Category by category
Price
SP 125
The SP 125 starts ₹13,601 lower (₹90,636 against ₹1,04,237), about ₹440 a month less on a standard loan.
Running cost
CNG Bike
CNG Bike claims 91 kmpl against 63 kmpl. That is roughly ₹4,338 a year in fuel at 30 km a day.
Performance
SP 125
SP 125 has the better power-to-weight ratio: 92 against 62 bhp per tonne. It will feel quicker with a pillion and on overtakes.
Safety kit
Tie
Braking and safety equipment are matched.
City manners
SP 125
SP 125 is 33 kg lighter and lower in the seat (790 mm), which you feel in traffic and when parking.
Warranty
CNG Bike
CNG Bike comes with 5 years of standard warranty against 3 on the SP 125.
Which one should you buy?
Buy the CNG Bike if
- mileage matters more to you than outright performance
- a longer standard warranty gives you peace of mind
- your priority is daily high-mileage commuting
- your priority is fuel-cost-conscious riders
Buy the SP 125 if
- you want the lower purchase price and EMI
- you ride two-up or on highways and want the stronger engine
- you are a new rider or shorter and want the lighter bike
- your priority is daily commuting
What each really costs
Base variants, Delhi, 30 km a day. Servicing and insurance are class-typical estimates.
| Cost | CNG Bike | SP 125 |
|---|---|---|
| Ex-showroom | ₹1,04,237 | ₹90,636 |
| On-road, Delhi | ₹1,19,400 | ₹1,04,500 |
| Fuel, 5 years | ₹49,295 | ₹70,985 |
| Servicing, 5 years | ₹30,000 | ₹17,500 |
| Insurance renewals | ₹5,732 | ₹5,016 |
| Five-year total | ₹2,04,427 | ₹1,98,001 |
Full specification comparison
Better figure in each row is shown in green.
| Spec | BajajCNG Bike | HondaSP 125 |
|---|---|---|
| Price | ||
| Starting ex-showroom | ₹1,04,237 | ₹90,636 |
| Rough EMI / month | ₹3,310 | ₹2,870 |
| Engine | ||
| Engine | 125 cc | 123.9 cc |
| Engine type | 1 Cylinder, Air Cooled, 2 Valves | 1 Cylinder, Air Cooled, 2 Valves |
| Power | 9.3 bhp | 10.7 bhp |
| Torque | 9.7 Nm | 10.9 Nm |
| Claimed mileage | 91 kmpl | 63 kmpl |
| Cooling | Air-cooled | Air-cooled |
| Transmission | 5 Speed | 5 Speed |
| Electric | ||
| Top speed | 93 km/h | 100 km/h |
| Dimensions | ||
| Kerb weight | 149 kg | 116 kg |
| Fuel tank | — | 11 L |
| Seat height | 825 mm | 790 mm |
| Ground clearance | 170 mm | 160 mm |
| Wheelbase | 1340 mm | 1285 mm |
| Length | — | 2027 mm |
| Width | — | 785 mm |
| Height | — | 1091 mm |
| Brakes & suspension | ||
| Front brake | Drum, 130 mm | Drum, 130 mm |
| Rear brake | Drum, 130 mm | Drum, 130 mm |
| ABS / CBS | CBS | CBS |
| Front suspension | Telescopic Fork | Telescopic |
| Rear suspension | Monoshock Absorber | Hydraulic Type |
| Tyres | ||
| Front tyre | 90/80-17 | 80/100-18 |
| Rear tyre | 120/70-16 | 100/80-18 |
CNG Bike vs SP 125: questions people ask
- Which is cheaper, the CNG Bike or the SP 125?
- The SP 125 is cheaper by ₹13,601 at the base variant (₹90,636 against ₹1,04,237 ex-showroom Delhi).
- Which gives better mileage, the CNG Bike or the SP 125?
- The CNG Bike claims 91 kmpl against 63 kmpl. Real-world figures for both will be lower.
- What is the on-road price difference between the CNG Bike and SP 125 in Delhi?
- About ₹14,900: roughly ₹1,19,400 for the CNG Bike and ₹1,04,500 for the SP 125, base variants, including road tax, registration and insurance.
- Which costs less to own over five years?
- Our estimate for five years at 30 km a day in Delhi is ₹2,04,427 for the CNG Bike and ₹1,98,001 for the SP 125, including purchase, fuel, servicing and insurance renewals. The SP 125 comes out ₹6,426 ahead.
