European stock markets were mixed Friday after occasional spots of positive news proved unable to fully offset the effect of a cocktail of uncertainties dogging investors.

Continued uncertainty over the political future of the U.S., given recent talk of impeachment proceedings, remained in the background, although the disappointing outcome of the latest OPEC meeting and investors shunning the automotive sector were primarily responsible for the uneven performance of markets.

The FTSE 100 rose by 0.40% before coming to rest at 7,547 in London while the midmarket FTSE 250 added 0.29% to settle at 20,025, with both closes representing record highs for British stock markets.

In Frankfurt, the DAX index slid by 0.15% to close at 12,602. In Paris, the CAC 40 dropped 0.01% to rest at 5,336 for the bank holiday weekend.

Over in southern Europe, the FTSE MIB in Milan and the IBEX in Madrid were down by close to 0.50% toward the close.

In individual stocks, publishing group Informa (IFPJF) led the FTSE 100 higher with a gain of more than 5% after saying that it is on track to report growth in revenue, earnings and operating cash-flow for the full year.

The financial, business and academic publisher acquired Penton Information Services in September for £1.2 billion and told investors Friday that it has benefited during recent months from its increased scale in key areas.

However, it is looking to sell Garland Science, an undergraduate college book publisher, to reduce its exposure to the academic books market.

Another top riser on London's blue chip index was sustainable tech manufacturer, Johnson Matthey (JMPLY) , which earns a sizeable chunk of its top line from the production of emissions control technology for automotive clients.

Investors have rewarded a strategic pivot toward new markets, announced in late April, during recent weeks as the company takes action to address the now-inevitable decline of demand for diesel cars.

In Frankfurt, financial powerhouses Deutsche Bank (DB) - Get Reportand Commerzbank (CRZBY) were the biggest fallers on the DAX, although the broader European financial sector was also found swimming deeply in the red.

German carmakers were under the cosh again also after media in the European country reported that President Donald Trump renewed his earlier attack on the industry in a meeting in Brussels.

BMW (BMWYY) led the declines among German carmakers during early trading, with a loss of 1.3%, to change hands at €84.06

Daimler (DDAIF) stock fell by just more than 0.50%, to change hands at an intraday low of €65.20 during early trading, before paring losses during noon trading.

Volkswagen (VLKAY) shed 0.79% to be quoted as low as €137.45 before recovering some of its lost ground shortly ahead of the close.

German automakers were not alone at the bottom of the tables Friday as the sector fell broadly across the continent, reflecting a cocktail of concerns over growth, trade and the proliferation of emissions related probes.

In Paris, Renault (RNSDF) and Peugeot (PEUGF) were among the top fallers on the CAC 40, second only to Societe Generale (SCGLY) and oil & gas engineer Technip (TKPPY) .

Action Alerts PLUS, which Cramer manages as a charitable trust, has no positions in the stocks mentioned.