As the harsh winter weather sets in, the freezing temperatures can leave you shivering in your car, debating whether or not to warm it up before heading out. The age-old question of how long to warm up your car on a cold day seems to be met with conflicting advice from various sources. To provide some clarity on this matter, we consulted with two automotive experts to shed light on the best practices for starting your car in chilly weather.
Warming Up: A Thing of the Past?
Robert Sinclair, Jr., the Senior Manager of Public Affairs at the American Automotive Association (AAA), debunks the notion that extended warmups are necessary for most vehicles on the road today. With advancements in fuel injection technology and the use of synthetic oil, modern cars are designed to be ready to drive within moments of starting the engine.
According to Sinclair, “After starting the vehicle, in the time that it takes to put on the seatbelt, the vehicle will be ready to drive.” He emphasizes that synthetic oil can flow and lubricate the engine even in cold temperatures, making it unnecessary to idle your car for an extended period before driving. Lauren Fix, the automotive expert for Car Coach Reports, concurs, stating that waiting 1-2 minutes is all that is required for newer cars to be sufficiently warmed up.
However, while you may not need to wait long to drive your car in cold weather, experts recommend driving gently until the engine reaches operating temperature. This approach effectively circulates engine oil and warms up the transmission and related components that remain cold during idling. So, while you may be eager to hit the gas pedal right away, taking it easy for the first few minutes will benefit your vehicle in the long run.
Old vs. New: The Warm-Up Dilemma
When it comes to older vehicles, particularly those with carburetors, the story is a bit different. Sinclair suggests that these older models may require a more extended warm-up period to reach operating temperature. Fix recommends allowing older cars to idle for about five minutes before driving.
However, with the prevalence of fuel injection in most engines since the late 80s and early 90s, the need for extended idling times is becoming less common. Sinclair notes that vehicles with this outdated technology are now transitioning into the classic car category, making them a rare sight on the roads today.
If your car refuses to start in cold weather, the most likely culprit is a weak battery. Sinclair explains that batteries lose power as temperatures drop, with a 30% loss at freezing and up to a 60% loss at zero degrees. If your engine cranks slowly but starts, this may be a warning sign that your battery is on its last legs. In such cases, it’s best to seek the assistance of an Automotive Service Excellence (ASE) mechanic to diagnose and address the issue.
Electric Vehicles: A Cold Weather Conundrum
While electric vehicles (EVs) don’t require engine warm-ups like traditional cars, they face unique challenges in cold temperatures. Recent testing by AAA revealed that EVs driven in sub-freezing weather with the cabin heater on can lose up to 40% of their range. This range anxiety is a real concern for EV owners, emphasizing the importance of planning ahead when driving in cold weather.
Additionally, EVs are much heavier than conventional cars, which can impact tire pressure significantly. Sinclair points out that EVs run tire pressures of 45 to 48 psi to accommodate the extra weight. However, many drivers overlook checking their tire pressure, leading to underinflated tires that can pose safety risks in cold weather conditions.
As temperatures drop, it’s crucial for all drivers, regardless of the type of vehicle they own, to stay informed about upcoming cold weather forecasts to ensure their safety and the optimal performance of their cars. So, the next time you’re faced with a frosty morning and a cold car, remember these expert tips to navigate the winter roads with confidence.
