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2011 Hyundai Elantra achieves 29 mpg in the city and 40 mpg on the highway.
Hyundai continues its push for great fuel economy across the board

Even though many manufacturers are looking to hybrid vehicles to boost the fuel economy of their automotive fleets, advances in traditional internal combustion engines can also lead to increased in fuel economy. Last week, we told you about the Chevrolet Cruze Eco which achieves a healthy 28 mpg in the city and a whopping 42 mpg on the highway.

Not to be overlooked, Hyundai has announced that its all new 2011 Elantra will also reach the magic 40 mpg mark. According to Autoblog, the Elantra is powered by a brand new 1.8-liter "Nu family" engine that generated 148hp at 6,500 rpm and 131 pound-feet of torque at 4,700 rpm.

Motor Trend reports that these power figures and fuel economy are achieved using a 10.3:1 compression ratio and traditional port fuel injection. Direct injection is no doubt a feature that will be added down the road and should further improve power and fuel efficiency.

The resultant fuel economy is 29 in the city and 40 mpg on the highway. Those figures are for all models of the Elantra, and not just specific trim levels like the Cruze Eco. For example, while the Cruze Eco is rated at 28/42, other trim levels are rated at 24/36.

Hyundai made the bold claim earlier this year that it wants to meet a self-imposed CAFE of 50 mpg by 2025. Vehicles like the Hyundai Sonata hybrid and new Elantra should help it inch closer towards those goals.

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RE: Higher mileage in Europe
By Flunk on 11/15/2010 10:33:43 AM , Rating: 2
Also, "Regular" fuel is higher octane than it is in the US. Around the same rating as "Premium" is here.

RE: Higher mileage in Europe
By FITCamaro on 11/15/2010 12:59:30 PM , Rating: 2
Really? Is there not midgrade and premium then? Or do they go up to 100 octane or so for premium gas. Would definitely make a difference in fuel economy and power as you could run higher compression ratios.

RE: Higher mileage in Europe
By GreenEnvt on 11/15/2010 1:30:34 PM , Rating: 4
Not really, that is a common misconception.

North America rates octane using the formula (RON+MON)/2. Europe just uses RON. RON has a higher value than MON, so the European values appear higher, but in essence are quite similar (slightly higher, but nothing like it looks at face value).

Also, even if that were the case, higher octane doesn't mean better mileage or better performance unless the vehicle is equipped to detect and handle it. Lower octane is actually preferable in most cases, but at high compression ratios, you end up with pre-detonation which will damage the engine. Thus you need to use higher octane fuel, which resists burning more then lower, to prevent pre-detonation.

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