Re: In the rains, at night, and cleaned up Quote:
Originally Posted by Moto-Mariner Have driven about 400Kms mostly inside city with heavy traffic. MID shows 8.2 KMPL. I guess this should improve gradually. However, i feel ecoboost owners, by large have not reported expected mileage (going by ARAI figures and 20% better FE of ecoboost), Your views? |
Right now, with "normal" Bangalore traffic, 100% AC use and 100% idling at signals, I'm getting 10.9 km/L reported on the MID. My MID readings have increased consistently from day 1 (I reset it upon tankfill), so that's reassuring, as my mental target is 11-12 km/L. I've got 1000 km on the odo, and no servicing done, so I'm optimistic.
My personal opinion about turbocharged engines is that the swept volume (e.g. 1 litre in this case) is irrelevant, what matters is the volume of fuel/air being combusted (which is higher due to the turbo compressing intake air), and if it gives the power of a 1.6L engine, I'd expect the mileage of a 1.6. The only time I'd expect better mileage is when we're below the turbo range, but the EcoBoost is lifeless at that point. Quote:
Originally Posted by Moto-Mariner Further, i feel a rumbling noise when i move the car on 1 gear, it sounds as if the engine is struggling to move the car. noise goes off once car starts moving. Did you experience anything like that? |
Please check your tachometer when the rumbling occurs, to see what rpm you're at. I've found that when moving, the rpm quickly shoots up to 1500 rpm and higher, so I get adequate torque to move forward without lugging the engine. Furthermore, my engine idles at 1000 rpm (except when cold, where its about 1100-1150 rpm). So, the possibility of lugging the engine is very unlikely, given the narrow band.
Also, are you engaging your brakes at this time? When new, brakes might make a slight moaning/rumbling sound when engaged, since the brake pads/discs need to bed in. Also, brake discs acquire a fine layer of rust (perfectly normal) which also gets scrubbed off during initial braking. Quote:
Originally Posted by Moto-Mariner Also, whats the suggested RPM/ KMPH regime to maintain during breaki-in period ? |
Ha ha, this is a superbly contentious point, and everyone have their own opinion about running a car in.
My advice is: - Don't lug the engine at row rpms. Use the instantaneous mileage indicator on the MID to gauge the best gear. I was surprised to find in some cases that running my car in 3rd at around 1300-1400 rpm consumed more fuel than in 2nd at a somewhat higher rpm.
- Limit yourself to mostly 3000-4000 rpm in the first 1600 km (which is the running in period quoted in the manual).
- Vary the rpm periodically (this will occur automatically since you're in the city) so the engine doesn't just cruise at a narrow range of rpms.
- Nothing wrong in hard acceleration after about 500 km, but ensure that this occurs in the 2nd & 3rd gears which have adequate torque due to gearing. Try not to do hard acceleration in higher gears yet, that puts more load on the engine/transmission.
- Remember the EcoBoost is turbocharged, and also bear in mind that petrol exhaust temperatures are higher than diesel (hence higher heat soak). So its doubly important to idle the engine appropriately, to let the turbocharger cool down.
- I'd strongly recommend crossing 6000 rpm only after your first oil + oil filter change.
- Remember that the other components also need to be run-in: tires reach peak efficiency only after 500-800 km, and brakes also need slight running in.
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