Bajaj CNG Bike vs Yamaha R15S
Prices ex-showroom Delhi, checked 2026-09. On-road and running costs estimated for Delhi.
Bajaj CNG Bike and Yamaha R15S are both sports bikes and turn up together on most shortlists. The R15S costs ₹55,789 more than the CNG Bike, so the question is whether what it adds is worth roughly 54% extra.
On our category count it is a draw at 3 each, which usually means the two are aimed at different riders rather than one being better.
Category by category
Price
CNG Bike
The CNG Bike starts ₹55,789 lower (₹1,04,237 against ₹1,60,026), about ₹1,760 a month less on a standard loan.
Running cost
CNG Bike
CNG Bike claims 91 kmpl against 46 kmpl. That is roughly ₹9,643 a year in fuel at 30 km a day.
Performance
R15S
R15S has the better power-to-weight ratio: 127 against 62 bhp per tonne. It will feel quicker with a pillion and on overtakes.
Safety kit
R15S
R15S adds dual-channel abs, front disc brake and rear disc brake that the CNG Bike does not have on any variant.
City manners
R15S
R15S is 7 kg lighter and lower in the seat (815 mm), which you feel in traffic and when parking.
Warranty
CNG Bike
CNG Bike comes with 5 years of standard warranty against 2 on the R15S.
Which one should you buy?
Buy the CNG Bike if
- you want the lower purchase price and EMI
- mileage matters more to you than outright performance
- a longer standard warranty gives you peace of mind
- you live where Bajaj's bigger service network matters
Buy the R15S if
- you ride two-up or on highways and want the stronger engine
- dual-channel ABS is non-negotiable for you
- you are a new rider or shorter and want the lighter bike
- your priority is budget performance seekers
What each really costs
Base variants, Delhi, 30 km a day. Servicing and insurance are class-typical estimates.
| Cost | CNG Bike | R15S |
|---|---|---|
| Ex-showroom | ₹1,04,237 | ₹1,60,026 |
| On-road, Delhi | ₹1,19,400 | ₹1,84,200 |
| Fuel, 5 years | ₹49,295 | ₹97,510 |
| Servicing, 5 years | ₹30,000 | ₹30,000 |
| Insurance renewals | ₹5,732 | ₹8,840 |
| Five-year total | ₹2,04,427 | ₹3,20,550 |
Full specification comparison
Better figure in each row is shown in green.
| Spec | BajajCNG Bike | YamahaR15S |
|---|---|---|
| Price | ||
| Starting ex-showroom | ₹1,04,237 | ₹1,60,026 |
| Rough EMI / month | ₹3,310 | ₹5,070 |
| Engine | ||
| Engine | 125 cc | 155 cc |
| Engine type | 1 Cylinder, Air Cooled, 2 Valves | 1 Cylinder, Liquid Cooled, 4 Valves |
| Power | 9.3 bhp | 18.1 bhp |
| Torque | 9.7 Nm | 14.2 Nm |
| Claimed mileage | 91 kmpl | 46 kmpl |
| Cooling | Air-cooled | Liquid-cooled |
| Transmission | 5 Speed | 6 Speed |
| Electric | ||
| Top speed | 93 km/h | 136 km/h |
| Dimensions | ||
| Kerb weight | 149 kg | 142 kg |
| Fuel tank | — | 11 L |
| Seat height | 825 mm | 815 mm |
| Ground clearance | 170 mm | 170 mm |
| Wheelbase | 1340 mm | 1325 mm |
| Length | — | 1990 mm |
| Width | — | 725 mm |
| Height | — | 1135 mm |
| Brakes & suspension | ||
| Front brake | Drum, 130 mm | Disc, 282 mm, 2 piston caliper |
| Rear brake | Drum, 130 mm | Disc, 220 mm, 1 piston caliper |
| ABS / CBS | CBS | Dual Channel ABS |
| Front suspension | Telescopic Fork | Telescopic Fork |
| Rear suspension | Monoshock Absorber | Linked-Type Monocross Suspension |
| Tyres | ||
| Front tyre | 90/80-17 | 100/80-17 |
| Rear tyre | 120/70-16 | 140/70-R17 |
CNG Bike vs R15S: questions people ask
- Which is cheaper, the CNG Bike or the R15S?
- The CNG Bike is cheaper by ₹55,789 at the base variant (₹1,04,237 against ₹1,60,026 ex-showroom Delhi).
- Which gives better mileage, the CNG Bike or the R15S?
- The CNG Bike claims 91 kmpl against 46 kmpl. Real-world figures for both will be lower.
- What is the on-road price difference between the CNG Bike and R15S in Delhi?
- About ₹64,800: roughly ₹1,19,400 for the CNG Bike and ₹1,84,200 for the R15S, 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 ₹3,20,550 for the R15S, including purchase, fuel, servicing and insurance renewals. The CNG Bike comes out ₹1,16,123 ahead.
