2011 Nissan S Awd on 2040-cars

Auto blog

DC fast charging not as damaging to EV batteries as expected

As convenient as DC fast charging is, there have been lots of warnings that repeated dumping of so many electrons into an electric vehicle's battery pack in such a short time would reduce the battery's life. While everyone agrees that DC fast charging does have some effect on battery life, it may not be as bad as previously expected. Over on SimanaitisSays, Dennis Simanaitis, writes about a recent presentation by Matt Shirk of the Idaho National Laboratory (INL) called DC Fast, Wireless, And Conductive Charging Evaluation Projects (PDF) that describes an ongoing test of four 2012 Nissan Leaf EVs that are being charged in two pairs of two. One pair only recharges from 50-kW DC fast chargers, which the other two sip from 3.3-kW Level 2 chargers exclusively. Otherwise, the cars are operated pretty much the same: climate is automatically set to 72 degrees, are driven on public roads around Phoenix, AZ and have the same set of dedicated drivers is rotated through the four cars. "Degradation depends more on the miles traveled than on the nature of recharging." What's most interesting are the charts on page seven of Shirk's presentation (click the image above to enlarge), which show the energy capacity of each of the four vehicles. When they were new, the four batteries were each tested to measure their energy capacity and given a 0 capacity loss baseline. They were then tested at 10,000, 20,000, 30,000 and 40,000 miles, and at each point, the DC-only EVs had roughly the same amount of battery loss as the Level 2 test subjects. The DC cars did lose a bit more at each test, but only around a 25-percent overall loss after 40k, compared to 23 percent for the Level 2 cars. Simanaitis' takeaway is that, "INL data suggest that the amount of degradation depends more on the miles traveled than on the nature of recharging." The tests are part of the INLs' Advanced Vehicle Testing Activity work and a final report is forthcoming. These initial numbers from IPL do mesh with other research into DC fast charging, though. Mitsubishi said daily fast charging wouldn't really hurt the battery in the i-MiEV and MIT tests of a Fisker Karma battery showed just 10-percent loss over 1,500 rapid charge-discharge cycles.

Common Nissan Maxima vs. Subaru Legacy breakdowns

The Nissan Maxima and Subaru Legacy are both popular sedans. Similarities can be seen in price, styling, and performance. What are some common repair problems seen in each model? When do they occur and how much do they cost to fix? What about how to pay for car repairs? Let's find out. Check Engine Light Both Maxima and Legacy owners dread the appearance of this little light. In the Nissan, it's most likely a failed ignition coil. This part transforms the car battery voltage into a higher voltage required for starting. This problem appears more often in Maximas with over 140,000 miles. The cost to replace the ignition coil runs around $400, parts and labor. The check engine light on the Subaru Legacy is more often due to a failed oxygen sensor. The O2 sensor measures the oxygen level in the exhaust and can affect fuel consumption. This part fails more frequently in models with over 110,000 miles. The repair costs around $200. Legacy Sound System Problems It's not uncommon for the Legacy to have sound system failures at 140,000 miles or more. The speakers might not work or only function intermittently. Hitting a bump might also cause the radio to shut off. Repair costs here can vary, but the typical charge is around $600. Nissan Check Engine Light Part 2 The Nissan check engine light also may appear due to oil leaking from the camshaft position sensor. Difficulty with stalling and acceleration might occur as well. The repair costs around $250 and is more frequent in models with over 104,000 miles. Big-Ticket Items Some repairs are especially costly. In Maximas with over 120,000 miles, the power steering pump may begin to malfunction. This produces a clunking or knocking sound when driving over uneven terrain. Steering might be affected with abnormal noises heard when turning the steering wheel. A Nissan Maxima power steering pump replacement costs around $1,250, parts and labor. Now, if you begin to feel your Legacy vibrating or shuddering at around 116,000 miles, it may be a transmission problem. It's more noticeable when the car shifts gears. Legacy transmission repair can be expensive, costing up to $2,000 or more. Even more costly is a Subaru Legacy head gasket failure, seen more often at 110,000 miles or more. AC malfunction, fluid leaks, and engine overheating can occur when the head gasket fails. The repair costs are around $3,000.

Nissan could have bought a stake in Aston Martin as early as 2012

Aston Martin has a very interesting future ahead of it. While the British brand appeared to be struggling with aging tech for a while, fresh investment from Daimler may have shown a light toward the future with the brand getting engines and electronics from them. Also, former Renault-Nissan top exec Andy Palmer has jumped ship from the French/Japanese automaker to become CEO of the much smaller sports car company. Interestingly, though, new reports from unnamed Nissan sources have indicated that Palmer has been pushing to work with AM for years.
Three unnamed company insiders told Reuters that Palmer made attempts to convince Renault-Nissan CEO Carlos Ghosn in 2012 and 2013 to invest in Aston Martin, but his proposals were shot down both times for unspecified reasons, according to Automotive News. "We looked carefully at the proposal but we passed on it," said one of the sources.
You can easily see why Palmer was eying Aston Martin even back in 2012. It's no secret that the British sports car mavens were in need of extra funding, well before the Daimler investment. Building vehicles these days is only getting more expensive with stronger safety and emissions requirements. Just look at the brand's desperate hope to get a side-impact crash exemption to keep selling its models in the US as an example.