Bajaj CNG Bike vs Yamaha FZ Blue Flex
Prices ex-showroom Delhi, checked 2026-09. On-road and running costs estimated for Delhi.
Bajaj CNG Bike and Yamaha FZ Blue Flex are both sports bikes and turn up together on most shortlists. The CNG Bike undercuts the FZ Blue Flex by ₹21,865, a gap big enough to notice on the EMI but not to decide the argument on its own.
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 ₹21,865 lower (₹1,04,237 against ₹1,26,102), about ₹690 a month less on a standard loan.
Running cost
CNG Bike
CNG Bike claims 91 kmpl against 50 kmpl. That is roughly ₹8,067 a year in fuel at 30 km a day.
Performance
FZ Blue Flex
FZ Blue Flex has the better power-to-weight ratio: 85 against 62 bhp per tonne. It will feel quicker with a pillion and on overtakes.
Safety kit
FZ Blue Flex
FZ Blue Flex adds single-channel abs, front disc brake and rear disc brake that the CNG Bike does not have on any variant.
City manners
FZ Blue Flex
FZ Blue Flex is 13 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 2 on the FZ Blue Flex.
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 FZ Blue Flex if
- 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 flex-fuel curious buyers
- your priority is simple daily commuting
What each really costs
Base variants, Delhi, 30 km a day. Servicing and insurance are class-typical estimates.
| Cost | CNG Bike | FZ Blue Flex |
|---|---|---|
| Ex-showroom | ₹1,04,237 | ₹1,26,102 |
| On-road, Delhi | ₹1,19,400 | ₹1,43,400 |
| Fuel, 5 years | ₹49,295 | ₹89,630 |
| Servicing, 5 years | ₹30,000 | ₹30,000 |
| Insurance renewals | ₹5,732 | ₹6,884 |
| Five-year total | ₹2,04,427 | ₹2,69,914 |
Full specification comparison
Better figure in each row is shown in green.
| Spec | BajajCNG Bike | YamahaFZ Blue Flex |
|---|---|---|
| Price | ||
| Starting ex-showroom | ₹1,04,237 | ₹1,26,102 |
| Rough EMI / month | ₹3,310 | ₹4,000 |
| Engine | ||
| Engine | 125 cc | 149 cc |
| Engine type | 1 Cylinder, Air Cooled, 2 Valves | 1 Cylinder, Air Cooled, 2 Valves |
| Power | 9.3 bhp | 11.5 bhp |
| Torque | 9.7 Nm | 12.8 Nm |
| Claimed mileage | 91 kmpl | 50 kmpl |
| Cooling | Air-cooled | Air-cooled |
| Transmission | 5 Speed | 5 Speed |
| Electric | ||
| Top speed | 93 km/h | — |
| Dimensions | ||
| Kerb weight | 149 kg | 136 kg |
| Fuel tank | — | 12 L |
| Seat height | 825 mm | 790 mm |
| Ground clearance | 170 mm | 135 mm |
| Wheelbase | 1340 mm | 1330 mm |
| Length | — | 2000 mm |
| Width | — | 780 mm |
| Height | — | 1065 mm |
| Brakes & suspension | ||
| Front brake | Drum, 130 mm | Disc, 282 mm |
| Rear brake | Drum, 130 mm | Disc, 220 mm |
| ABS / CBS | CBS | Single Channel ABS |
| Front suspension | Telescopic Fork | Telescopic Fork |
| Rear suspension | Monoshock Absorber | Swingarm |
| Tyres | ||
| Front tyre | 90/80-17 | 100/80-17 |
| Rear tyre | 120/70-16 | 140/60R-17 |
CNG Bike vs FZ Blue Flex: questions people ask
- Which is cheaper, the CNG Bike or the FZ Blue Flex?
- The CNG Bike is cheaper by ₹21,865 at the base variant (₹1,04,237 against ₹1,26,102 ex-showroom Delhi).
- Which gives better mileage, the CNG Bike or the FZ Blue Flex?
- The CNG Bike claims 91 kmpl against 50 kmpl. Real-world figures for both will be lower.
- What is the on-road price difference between the CNG Bike and FZ Blue Flex in Delhi?
- About ₹24,000: roughly ₹1,19,400 for the CNG Bike and ₹1,43,400 for the FZ Blue Flex, 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 ₹2,69,914 for the FZ Blue Flex, including purchase, fuel, servicing and insurance renewals. The CNG Bike comes out ₹65,487 ahead.
